Hierarchy Maintenance for Vendors in SAP MDG

Hello Experts,

Has anyone configured hierarchy processing for vendors in SAP MDG??

I want to know what configurations are required to make hierarchy processing work for vendors. See below screenshots.

I created a Change Request for Hierarchy Processing and then try to create a hierarchy but system throws error:

I have added user name in the Get Agent decision table and also in the customizing - Assign processors to Change Request step numbers (simple workflow):

Thanks & Regards,

Swati