Field &1 in table &2 is initial for value &3 of &4

What causes this issue?

Field &V1& in table &V2& is initial for value &V3& for field &V4&. This
is not permitted.

System Response

No further processing is possible.

How to fix this error?

Ensure that field &V1& in table &V2& is initial.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.