Getting 'UserId attribute value is null' error when trying to create a user and assign an abstract r

Summary: Getting 'UserId attribute value is null' error when trying to create a user and assign an abstract role using HCM Data Loader in a single file.

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Hi all,

I am working on an OIC integration that creates workers using HDL (worker.dat). That part is working fine. The next step is to create a user account and assign an abstract role for those workers using a user.dat file — also via OIC.

The worker records exist in HCM and the role is confirmed in Security Console. However, when I load the file, it fails at the Load step with this error: