WCSW information missing for the employee &1

What causes this issue?

In the NIS register archive, the CTPS data (worker's card and social
insurance) is mandatory. However, the employee &v1& does not present
this data in the system.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

INCLUDE PYBR_NIS_01 OBJECT DOKU ID TX

How to fix this error?

Fill in the infotype <LS>Documents</> (0465), subinfotype <LS>Work
certificate</> (0003).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.