Reconciliation account & or short key & is not permitted

What causes this issue?

The system checked the entry to see whether a reconciliation account
exists with the number &V1& and whether it can be entered here, or
whether the first two characters of your entry '&V2&' form a permitted
short key. Both options do not apply for the value entered, the
reconciliation account with number &V1& is not maintained as a permitted
alternative reconciliation account for reconciliation account &V3&.

System Response

Error message

How to fix this error?

Enter either a permitted G/L account number or a permitted short key.

Error message extract from SAP system. Copyright SAP SE.