# PDS Onboarding Process

**URL:** <https://developer.community.nhs.uk/t/pds-onboarding-process/11291>\
**Category:** Personal Demographics Service FHIR API\
**Tags:** pds, onboarding, fhir, spine\
**Created:** [24 March 2026 18:08 UTC](https://developer.community.nhs.uk/t/pds-onboarding-process/11291 "2026-03-24T18:08:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Timothy\_Schruben](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Timothy\_Schruben](https://developer.community.nhs.uk/u/Timothy_Schruben)\
**Post date:** [24 March 2026 18:08 UTC](https://developer.community.nhs.uk/t/pds-onboarding-process/11291/1 "2026-03-24T18:08:01Z")

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I’m working my way through the onboarding questions and this one is a little confusing to me. When for the PDS-FHIR-EUOODS-1 question about multiple end user organizations asking about populating a header with an ODS code. Does anyone know what they mean by “header”? Is it a web page header, or is this something to to with HTTP, or something else?

 ![image (3)](https://europe1.discourse-cdn.com/nhsdigitaldeveloper/original/1X/9fd90a84d40aa699f67c30c78413cddd85c533d0.png)

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**Author:** ![jenna.hartley-smith](https://dub1.discourse-cdn.com/nhsdigitaldeveloper/user_avatar/developer.community.nhs.uk/jenna.hartley-smith/32/14_2.png) [@jenna.hartley-smith](https://developer.community.nhs.uk/u/jenna.hartley-smith)\
**Post date:** [27 March 2026 10:04 UTC](https://developer.community.nhs.uk/t/pds-onboarding-process/11291/2 "2026-03-27T10:04:27Z")

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Hi @Timothy_Schruben

I spoke to the team and they said it is mandatory that if a connecting party has end user organisations, they populate the call header with the ODS code of the end user org, so we can audit where data is shared.

This is shown in the spec published on our API catalogue and can be found under the Headers section: [Personal Demographics Service - FHIR API - NHS England Digital](https://digital.nhs.uk/developer/api-catalogue/personal-demographics-service-fhir#get-/Patient "https://digital.nhs.uk/developer/api-catalogue/personal-demographics-service-fhir#get-/patient")

Hope that helps.  
Jenna

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**Author:** ![Timothy\_Schruben](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Timothy\_Schruben](https://developer.community.nhs.uk/u/Timothy_Schruben)\
**Post date:** [27 March 2026 17:09 UTC](https://developer.community.nhs.uk/t/pds-onboarding-process/11291/3 "2026-03-27T17:09:20Z")

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That helps and answers my confusion. call header is perfect and I get it now. Thank you so much.