Web API Batch Transactions – Content-ID URI Variables Not Working

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This is quite an old post but I have run into a similar issue with batch requests.

It fails when using Content-ID’s along with Prefer: return=representation with the message:

Content-ID Reference: ‘$1’ does not exist in the batch context

It works perfectly if I remove Prefer: return=representation – however I need this to get ID/lookup fields back.

I haven’t been able to find any documentation regarding the two.

Does anyone know of a solution?

EG

–dwa_batch_86262503-77f0-41f6-8a69-3412c4c73e1f

Content-Type: multipart/mixed;boundary=changeset_6b0e18cc-bae8-4365-8348-1d4cc2dcc068

–changeset_6b0e18cc-bae8-4365-8348-1d4cc2dcc068

Content-Type: application/http

Content-Transfer-Encoding: binary

Content-ID: 1

PATCH https://.dynamics.com/api/data/v9.2/entity1 HTTP/1.1

Content-Type: application/json

Prefer: return=representation

{“data” : “here”}

–changeset_6b0e18cc-bae8-4365-8348-1d4cc2dcc068

Content-Type: application/http

Content-Transfer-Encoding: binary

Content-ID: 100001

PATCH https://.dynamics.com/api/data/v9.2/entity2 HTTP/1.1

Content-Type: application/json

{“data” : “here”}

–changeset_6b0e18cc-bae8-4365-8348-1d4cc2dcc068–

–dwa_batch_86262503-77f0-41f6-8a69-3412c4c73e1f–



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