search_doffin

Search Norwegian public procurement notices on Doffin.

Signature: search_doffin(query: string, optional, default ''; types: list of string (comma-separated), optional, default None; statuses: list of string (comma-separated), optional, default None; contract_nature: list of string (comma-separated), optional, default None; cpv_codes: list of string (comma-separated), optional, default None; locations: list of string (comma-separated), optional, default None; buyer: list of string (comma-separated), optional, default None; winner: list of string (comma-separated), optional, default None; date_from: string, optional, default None; date_to: string, optional, default None; sort_by: string, optional, default 'RELEVANCE'; page: integer, optional, default 1; hits_per_page: integer, optional, default 10; include_placeholders: yes/no, optional, default False; limit: integer, items, optional, default 25; offset: integer, items, optional, default 0)

Direct GET

For navigating agents: open the HTML page with parameters in the URL. The result is fetched and displayed without screenshots or form filling.

Open this validated HTML GET URL

https://allemannsdata.com/wiki/kilder/doffin/search_doffin/?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0

Replace {query}, {types}, {statuses}, {contract_nature}, {cpv_codes}, {locations}, {buyer}, {winner}, {date_from}, {date_to}, {sort_by}, {page}, {hits_per_page}, {include_placeholders} with values. Remove unused optional parameters from the URL.

For software and dashboards: Read the operation descriptor. The JSON GET template is https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0. Open this exact request as JSON.

Parameter	Requirement	JSON type	Description
`query`	optional	string	Free-text search (Norwegian or English), e.g. "IT-drift", "snørydding", "rammeavtale konsulent". Start here.
`types`	optional	union	Filter by notice type. Parent types: PLANNING, COMPETITION, RESULT. Specific types: ANNOUNCEMENT_OF_COMPETITION, DYNAMIC_PURCHASING_SCHEME, QUALIFICATION_SCHEME, ANNOUNCEMENT_OF_INTENT, PRE_ANNOUNCEMENT, ADVISORY_NOTICE, NOTICE_ON_BUYER_PROFILE, ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT, CHANGE_OF_CONCLUSION_OF_CONTRACT, CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT. Use ["COMPETITION"] + statuses=["ACTIVE"] for open tenders.
`statuses`	optional	union	ACTIVE (open for bids), EXPIRED, AWARDED, CANCELLED.
`contract_nature`	optional	union	WORKS, SERVICES and/or SUPPLIES.
`cpv_codes`	optional	union	8-digit CPV codes, e.g. ["45000000"]. Matches the code and its children. Find codes with search_cpv_codes(). Best combined with a free-text query.
`locations`	optional	union	NUTS-style location ids, e.g. ["NO060"] (Trøndelag), or "anyw" for non-location-bound. See list_location_codes().
`buyer`	optional	union	Buyer organization full name(s) exactly as written on notices, e.g. ["Trondheim kommune"]. Resolved to Doffin's internal buyer id via a free-text lookup; names that match no buyer are reported in "note" and, if none match, no results are returned (rather than an unfiltered search). Pass the 32-hex buyer id from a result's buyer field directly to skip the lookup.
`winner`	optional	union	Doffin's internal supplier id (32-hex). Winner names cannot be used - they are not present in search results to resolve against.
`date_from`	optional	union	Publication date lower bound, "YYYY-MM-DD".
`date_to`	optional	union	Publication date upper bound, "YYYY-MM-DD".
`sort_by`	optional	string	RELEVANCE (default), PUBLICATION_DATE_DESC, PUBLICATION_DATE_ASC, DEADLINE, ESTIMATED_VALUE_ASC, ESTIMATED_VALUE_DESC.
`page`	optional	integer	1-based page number.
`hits_per_page`	optional	integer	1-50 (default 10).
`include_placeholders`	optional	boolean	By default, hits whose buyer fields look like unfilled eForm template values (org id 123456789, placeholder buyer names) are dropped from the results as junk. Set True to keep them, each flagged with "possible_placeholder": true.
`limit`	optional	integer	Gateway page size; default 25, maximum 100.
`offset`	optional	integer	Number of list items to skip; default 0.

Generated JavaScript, Python and response structure

Use JSON when the user requests code, machine-readable data, value extraction or further computation. Use the HTML GET page to identify the correct source and verify parameters.

Example for generated JavaScript and Python

https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0

Replace URL placeholders and remove unused optional parameters.

JavaScript in a dashboard

const url = "https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0";
const response = await fetch(url);
if (!response.ok) {
  const failure = await response.json();
  throw new Error(`${failure.error.code}: ${failure.error.message} ${failure.suggestion}`);
}
const result = await response.json();
const data = result.data;

Python without additional packages

import json
from urllib.request import urlopen

url = "https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0"
with urlopen(url) as response:
    result = json.load(response)
data = result["data"]

Response structure

{
  "source": "doffin",
  "operation": "search_doffin",
  "parameters": {},
  "data": {},
  "entities": [],
  "_meta": {"retrieved_at": "...", "sources": [], "cache": {}},
  "_links": {"self": "...", "source": "...", "wiki": "...", "feedback": "..."}
}

Form for manual use

The form is a fallback for people and browser agents that cannot open the GET URL directly.

query Type: string. Free-text search (Norwegian or English), e.g. "IT-drift", "snørydding", "rammeavtale konsulent". Start here.

types Type: list of string (comma-separated). Filter by notice type. Parent types: PLANNING, COMPETITION, RESULT. Specific types: ANNOUNCEMENT_OF_COMPETITION, DYNAMIC_PURCHASING_SCHEME, QUALIFICATION_SCHEME, ANNOUNCEMENT_OF_INTENT, PRE_ANNOUNCEMENT, ADVISORY_NOTICE, NOTICE_ON_BUYER_PROFILE, ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT, CHANGE_OF_CONCLUSION_OF_CONTRACT, CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT. Use ["COMPETITION"] + statuses=["ACTIVE"] for open tenders.

statuses Type: list of string (comma-separated). ACTIVE (open for bids), EXPIRED, AWARDED, CANCELLED.

contract_nature Type: list of string (comma-separated). WORKS, SERVICES and/or SUPPLIES.

cpv_codes Type: list of string (comma-separated). 8-digit CPV codes, e.g. ["45000000"]. Matches the code and its children. Find codes with search_cpv_codes(). Best combined with a free-text query.

locations Type: list of string (comma-separated). NUTS-style location ids, e.g. ["NO060"] (Trøndelag), or "anyw" for non-location-bound. See list_location_codes().

buyer Type: list of string (comma-separated). Buyer organization full name(s) exactly as written on notices, e.g. ["Trondheim kommune"]. Resolved to Doffin's internal buyer id via a free-text lookup; names that match no buyer are reported in "note" and, if none match, no results are returned (rather than an unfiltered search). Pass the 32-hex buyer id from a result's buyer field directly to skip the lookup.

winner Type: list of string (comma-separated). Doffin's internal supplier id (32-hex). Winner names cannot be used - they are not present in search results to resolve against.

date_from Type: string. Publication date lower bound, "YYYY-MM-DD".

date_to Type: string. Publication date upper bound, "YYYY-MM-DD".

sort_by Type: string. RELEVANCE (default), PUBLICATION_DATE_DESC, PUBLICATION_DATE_ASC, DEADLINE, ESTIMATED_VALUE_ASC, ESTIMATED_VALUE_DESC.

page Type: integer. 1-based page number.

hits_per_page Type: integer. 1-50 (default 10).

include_placeholders Type: yes/no. By default, hits whose buyer fields look like unfilled eForm template values (org id 123456789, placeholder buyer names) are dropped from the results as junk. Set True to keep them, each flagged with "possible_placeholder": true.

Result

Source: Doffin and TED. Retrieved 2026-10-26T19:45:24Z in 1.141 seconds.

total_count:

hits:

6 results

id:
2024-100456
buyer:
1 results
1. id:
  0f5223b4541cca6e7a1cfe09866c2ef9
  organization_id:
  971278374
  name:
  STATSBYGG
heading:
2023/739 - Avtale om kjøp av IKT - prosjektverktøy for Statsbyggs byggeprosjekter - Kvalifisering - Trinn 1
description:
Statsbygg ber om tilbud på avtale om kjøp av IKT - prosjektverktøy for Statsbyggs byggeprosjekterDet skal inngås kontrakt med 1 leverandør.For informasjon om oppdragsgiver henvises det til www.statsbygg.no.
location_id:
2 results
1. anyw
2. NO081
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2024-01-11T09:30:46Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2024-01-12
placeOfPerformance:
- Oslo
- Ikke stedbunden
procurementStrategicLabels:
No results.
id:
2022-908126
buyer:
1 results
1. id:
  1e92766cf7ecbb4caf9011021b2185f1
  organization_id:
  818 379 862
  name:
  OSLO KOMMUNE FORNEBUBANEN
heading:
Anskaffelse av helhetlig IKT-prosjektverktøy
description:
Fornebubanen inngikk i 2019 avtale med Omega om prosjektstyringssystem for en del moduler, herunder kostnad-, dokument-, fremdrift- og kontraktstyring. Omega365 er en helhetlig løsningsplattform hvor de ulike fagområder (moduler) henger sammen ved å være tett integrert og benytter samme registre/datagrunnlag. Systemet er levert som Software as a Service. Etter at prosjektet kom i gang, har vi sett behov for systemstøtte for flere fag i gjennomføringen av prosjektet. Dette er tilleggsmoduler som ikke var en del av opprinnelig avtale. Anskaffelse gjelder følgende moduler: systematisk ferdigstillelse, kvalitet, saks- og prosessløsning, usikkerhetsstyring, ressursstyring, samt BIM-funksjonalitet.
location_id:
1 results
1. NO08
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-11-10T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2022-11-10
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2022-386292
buyer:
1 results
1. id:
  7f0c0a046027043f3d8384932fa384df
  organization_id:
  934949145
  name:
  Norcem AS
heading:
Completion Management System
description:
Konkurransen gjaldt anskaffelse av et "Completion Management System".
location_id:
1 results
1. NO0
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-07-06T10:00:00Z
deadline:
not reported by source
sentToTed:
no
publicationDate:
2022-07-06
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2022-305861
buyer:
1 results
1. id:
  8ed6139700ffdea0b599bb7c0b3537b5
  organization_id:
  975950662
  name:
  Forsvarsbygg
heading:
R01138 Prekvalifisering prosjektstyringsløsning på lokalt datasenter med lukket nett (on-premises)
description:
Forsvarsbygg ønsker med denne konkurransen å inngå kontrakt med en leverandør som kan tilby prosjektstyringsløsning for større og mindre bygge- og vedlikeholdsprosjekter på lokalt datasenter (on-premises). Løsningen skal understøtte Forsvarsbyggs prosjektmetodikk og arbeidsprosesser som bygger på Lean Construction, VDC, digital samhandling og kommunikasjon, i tillegg til systematisk ferdigstillelse. Prosjektstyring og samhandling mellom byggherre, entreprenør og prosjekteringsgruppe som Kunden gjennomfører skal ivaretas.
location_id:
1 results
1. NO0
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-02-21T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2022-02-21
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2021-384696
buyer:
1 results
1. id:
  fdec58573c324647f60a7e066b7da00f
  organization_id:
  915 488 099
  name:
  Nye Veier
heading:
Avtale om konsulentbistand i tilknytning til prosjekt-og systemtjenester (PIMS)
description:
Nye veier har til intensjon å inngå avtale med Omega 365 Solutions As for levering av konsulenttjenester for support av prosjektstyringsverktøyet PIMS 365/Omega 365. Supportbistand omfatter blant annet, men ikke begrenset til; Utbedringer/retting av brukerfeil. Utbedring/retting av registrerte systemfeil. Veiledning for effektiv bruk av systemet. Systemet er utviklet og driftes av Omega 365 Solutions AS, og er da eneste leverandør. Hjemmel: Foa § 13-4 b) nr. 2: Anskaffelsen gjelder ytelser som bare en bestemt leverandør kan levere fordi konkurranse er umulig av tekniske årsaker. Omega 365 Solutions AS er eneste leverandør i markedet som kan levere denne tjenesten på sitt system.
location_id:
No results.
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_INTENT
allTypes:
2 results
1. ANNOUNCEMENT_OF_INTENT
2. RESULT
status:
not reported by source
issueDate:
2021-06-24T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2021-06-24
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2017-376589
buyer:
1 results
1. id:
  17acf096682da47bf7f3a7ecc368ef18
  organization_id:
  983 974 678
  name:
  Helse Stavanger HF
heading:
Prosjektstyringsfunksjoner
description:
Anskaffelse av fagleder - planlegging og fremdriftsstyring Anskaffelse av fagleder - kostnadsstyring Se Konkurransegrunnlaget.
location_id:
No results.
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2017-08-22T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2017-08-22
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.

limit:

offset:

returned:

has_more_results:

Show all fields in HTML

total_count:

hits:

6 results

id:
2024-100456
buyer:
1 results
1. id:
  0f5223b4541cca6e7a1cfe09866c2ef9
  organization_id:
  971278374
  name:
  STATSBYGG
heading:
2023/739 - Avtale om kjøp av IKT - prosjektverktøy for Statsbyggs byggeprosjekter - Kvalifisering - Trinn 1
description:
Statsbygg ber om tilbud på avtale om kjøp av IKT - prosjektverktøy for Statsbyggs byggeprosjekterDet skal inngås kontrakt med 1 leverandør.For informasjon om oppdragsgiver henvises det til www.statsbygg.no.
location_id:
2 results
1. anyw
2. NO081
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2024-01-11T09:30:46Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2024-01-12
placeOfPerformance:
- Oslo
- Ikke stedbunden
procurementStrategicLabels:
No results.
id:
2022-908126
buyer:
1 results
1. id:
  1e92766cf7ecbb4caf9011021b2185f1
  organization_id:
  818 379 862
  name:
  OSLO KOMMUNE FORNEBUBANEN
heading:
Anskaffelse av helhetlig IKT-prosjektverktøy
description:
Fornebubanen inngikk i 2019 avtale med Omega om prosjektstyringssystem for en del moduler, herunder kostnad-, dokument-, fremdrift- og kontraktstyring. Omega365 er en helhetlig løsningsplattform hvor de ulike fagområder (moduler) henger sammen ved å være tett integrert og benytter samme registre/datagrunnlag. Systemet er levert som Software as a Service. Etter at prosjektet kom i gang, har vi sett behov for systemstøtte for flere fag i gjennomføringen av prosjektet. Dette er tilleggsmoduler som ikke var en del av opprinnelig avtale. Anskaffelse gjelder følgende moduler: systematisk ferdigstillelse, kvalitet, saks- og prosessløsning, usikkerhetsstyring, ressursstyring, samt BIM-funksjonalitet.
location_id:
1 results
1. NO08
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-11-10T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2022-11-10
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2022-386292
buyer:
1 results
1. id:
  7f0c0a046027043f3d8384932fa384df
  organization_id:
  934949145
  name:
  Norcem AS
heading:
Completion Management System
description:
Konkurransen gjaldt anskaffelse av et "Completion Management System".
location_id:
1 results
1. NO0
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-07-06T10:00:00Z
deadline:
not reported by source
sentToTed:
no
publicationDate:
2022-07-06
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2022-305861
buyer:
1 results
1. id:
  8ed6139700ffdea0b599bb7c0b3537b5
  organization_id:
  975950662
  name:
  Forsvarsbygg
heading:
R01138 Prekvalifisering prosjektstyringsløsning på lokalt datasenter med lukket nett (on-premises)
description:
Forsvarsbygg ønsker med denne konkurransen å inngå kontrakt med en leverandør som kan tilby prosjektstyringsløsning for større og mindre bygge- og vedlikeholdsprosjekter på lokalt datasenter (on-premises). Løsningen skal understøtte Forsvarsbyggs prosjektmetodikk og arbeidsprosesser som bygger på Lean Construction, VDC, digital samhandling og kommunikasjon, i tillegg til systematisk ferdigstillelse. Prosjektstyring og samhandling mellom byggherre, entreprenør og prosjekteringsgruppe som Kunden gjennomfører skal ivaretas.
location_id:
1 results
1. NO0
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2022-02-21T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2022-02-21
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2021-384696
buyer:
1 results
1. id:
  fdec58573c324647f60a7e066b7da00f
  organization_id:
  915 488 099
  name:
  Nye Veier
heading:
Avtale om konsulentbistand i tilknytning til prosjekt-og systemtjenester (PIMS)
description:
Nye veier har til intensjon å inngå avtale med Omega 365 Solutions As for levering av konsulenttjenester for support av prosjektstyringsverktøyet PIMS 365/Omega 365. Supportbistand omfatter blant annet, men ikke begrenset til; Utbedringer/retting av brukerfeil. Utbedring/retting av registrerte systemfeil. Veiledning for effektiv bruk av systemet. Systemet er utviklet og driftes av Omega 365 Solutions AS, og er da eneste leverandør. Hjemmel: Foa § 13-4 b) nr. 2: Anskaffelsen gjelder ytelser som bare en bestemt leverandør kan levere fordi konkurranse er umulig av tekniske årsaker. Omega 365 Solutions AS er eneste leverandør i markedet som kan levere denne tjenesten på sitt system.
location_id:
No results.
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_INTENT
allTypes:
2 results
1. ANNOUNCEMENT_OF_INTENT
2. RESULT
status:
not reported by source
issueDate:
2021-06-24T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2021-06-24
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.
id:
2017-376589
buyer:
1 results
1. id:
  17acf096682da47bf7f3a7ecc368ef18
  organization_id:
  983 974 678
  name:
  Helse Stavanger HF
heading:
Prosjektstyringsfunksjoner
description:
Anskaffelse av fagleder - planlegging og fremdriftsstyring Anskaffelse av fagleder - kostnadsstyring Se Konkurransegrunnlaget.
location_id:
No results.
estimatedValue:
not reported by source
type:
ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
allTypes:
2 results
1. RESULT
2. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
status:
not reported by source
issueDate:
2017-08-22T10:00:00Z
deadline:
not reported by source
sentToTed:
yes
publicationDate:
2017-08-22
placeOfPerformance:
No results.
procurementStrategicLabels:
No results.

limit:

offset:

returned:

has_more_results:

Will you use the result in generated code?

Open the same result as JSON

Is data missing or incorrect? Send feedback about this result.

Continue exploring

How an AI agent should use this page

Ground rule: Navigate with HTML GET links to keep explanations and relationships. Use the page's JSON alternative only when concrete values must be extracted, compared or computed.

How to use the search_doffin lookup

Replace the placeholders in the HTML GET template; remove optional parameters you do not need.
Check types, units, limits and ID formats in the parameter table.
Follow linked results to canonical pages before combining sources.

Misreading to avoid: An empty list means "no results for this lookup". An error message or unavailable source does not mean the data does not exist.

Source-specific next step

Follow the notice ID to the canonical page; use CPV and location codes to narrow broad free-text searches.

Go to the source page for other operations. Use the JSON template only after the HTML result shows that the parameters and source are correct.

AI agent? Read the complete navigation and programming guide.