System error: follow-on document for &1 &2 not found

What causes this issue?

The internal purchasing document &V3& &V4& generated by the system for
the settlement of &V1& &V2& could not be found.

System Response

It is not possible to settle &V1& &V2&.

How to fix this error?

Contact your system administrator.

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.