Obligatory parameter of CIC BDC folder '&1' is missing

What causes this issue?

An obligatory parameter was not provided, meaning that the action
cannot be performed.

System Response

Action is terminated.

How to fix this error?

Check the data flow for the CIC BDC folder '&V1&'.

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.