3648891 - Error: Cross-company-code purchasing not allowed in S/4HANA Cloud

• When creating purchase requisitions in a specific Company Code against a different Plant/Purchasing Organization, users encounter the error message:
• "Cross-company-code purchasing is not allowed".
• Additionally, the error message "No postings can be made to profit center <Profit Center ID> in company code <Company Code>" is sometimes displayed.
• The issue occurs inconsistently and appears to be linked to the "My User Defaults" section in the My Purchase Requisitions app.

SAP S/4HANA Cloud Public Edition

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