Attention: No parameter names defined for field mapping.

What causes this issue?

No parameter names were defined.

System Response

Result: No fields are displayed in field mapping.

How to fix this error?

Specify either manually, or using "Default", at least one parameter
name.

Procedure for System Administrators

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.