Enter either house bank or bank key data

How to fix this error?

The system needs bank data in order to be able to find check
information. You must therefore enter either the external bank data
(bank number and bank account number) or the SAP bank keys (house bank
and bank account key).

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

Error message extract from SAP system. Copyright SAP SE.