BDT application &1 supports only subscreen mode

What causes this issue?

You tried to call the BDT application &V1& in fullscreen or popup mode.

System Response

BDT application &V1& can only be called in subscreen using transaciton
RE80.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.