SYST:ANEP not updated (Contact your System Specialist)

What causes this issue?

Processing was cancelled because of an error when updating Table ANEP.

System Response

Line items cannot be updated for the asset &V2& &V3& in company code
&V1&. Data has probably been lost.

How to fix this error?

Inform your Systems Specialist.

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.