Calling a data management sequence in assembly1 from a button in assembly2

Hi

I have an assembly1 with generic functionality which can e.g. be triggered via DMs in assembly1.
I can see the DM in the task scheduler however I have not found a way to trigger it from another assembly2 via a button action ‘Data Management Sequence’.

If I run it I get the error Unable to execute dashboard server task for component 'btn_...'. Data Management Sequence 'TEST_DM_IN_ASSEMBLY1' is invalid.

Has anyone a solution?