Company code & does not exist; correct

What causes this issue?

The company code is deleted from one or more of these tables.

System Response

Processing is terminated.

How to fix this error?

<ZH>Procedure for the system administrator</>
Check whether the company code has been defined.
<DS:TRAN.OY01>Proceed</>
Check whether the company code is contained within payment program
customizing both in the list for all the company codes as well as in
the list for the paying company codes. <DS:TRAN.FBZP>Proceed</>
Add company code &V1& to the places mentioned if it was deleted by
mistake.

Error message extract from SAP system. Copyright SAP SE.