Issue with creation of integration model via CFM1 (IBP SDI data transfer for order based planning)

Hello everyone,

I am facing an issue while creating an integration model in S/4 via tr. code CFM1 which will be used afterwards for IBP master data transfer via SDI for Order based planning.

I would like to mark Materials and Plants from the Material Dependent Objects category. Once I am creating a model name, I choose the logical system and the APO application, then I mark the checkboxes for Plant and Materials, choose Enter and then they disappear (as in screenshot 2). Any help here will be highly appreciated.

The logical system maintained here in CFM1 is the same which is created in IBP in the app 'Configure Remote Sources (SDI)' , where I also get a test successful confirmation.

Initial screen:

As is:

Thank you very much in advance.

BR,
Julian