The entry for field & is missing in Table T800D

What causes this issue?

The entries in Table T800D are used to verify the master data. You do
not need to maintain them yourself, since they are hard-coded by SAP.
The entry for field &V1& is missing in this table - reason unknown.

System Response

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

How to fix this error?

Inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.