Supplier master data for supplier &1 not found

What causes this issue?

No general supplier master data exists for the supplier you entered.

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?

INCLUDE ISR_CHECK
If necessary, create the general supplier data (transaction
<DS:TRAN.XK01>XK01</>).
Transaction XK01 will redirect user to the BP transaction. Alternatively
you can use BP transaction to maintain general supplier data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.