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Error 'The driving field must be specified with a field LagProjectId' When Reading Reationship Data Using the P6 REST API (Doc ID 2897493.1)

Last updated on NOVEMBER 03, 2022

Applies to:

Primavera P6 Enterprise Project Portfolio Management Cloud Service - Version 22.8 to 22.8 [Release 22.8]
Information in this document applies to any platform.


When attempting to load relationship details using the REST API, the following error occurs.

  "message": "The driving field must be specified with a field LagProjectId=**** when reading business objects."


The error remains the same even when including a LagProjectId value.


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