Purchase Order requester invalid error

Summary:

When submitting the Purchase Order for approval, getting below error

The requester isn't valid. Verify that the requester name and email match the ones entered in the Oracle Human Capital Management Cloud, and that the correct name format is used. For example, use John Smith instead of Smith, John.

Verified both User record and Employee record, both looks fine, kindly suggest

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Version (include the version you are using, if applicable): 25D

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