Contract &1 does not exist

What causes this issue?

You have entered a contract number that does not exist in the system.

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?

Choose ENTER and correct your entries.
If the number in your document is incorrect, you can search for the
correct contract number by placing the cursor on the <LS>Contract</>
field and choosing the input help. In this way, you can display all
contracts for the supplier.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.