Enter another transaction type (Transaction type & does not exist)

What causes this issue?

According to your entry or specification, you want to use transaction
type &V1&. However, this transaction type has not been defined.

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?

Check the if transaction type &V1& is defined in FI-AA Customizing.

Error message extract from SAP system. Copyright SAP SE.