ECCS : are the flexible upload & Rollup methods incompatible?

Hello guys,

I have defined the flexible upload method for one of my entity.

I also want to use a rollup from table ECMCT to ECMCT for this entity but when trying to do so I receive the error message "Data transfer method for cons unit .... is not 'rollup' (Message no. G3506).

Do you have a solution for me?

Thank you for your help

best regards

Pascal