Budget Write back EPM to ERP GL (mapping parents in EPM to base members in ERP)

Summary:

I have this requirement, where I need to push total value from parent members in EPM dimensions to one base member in respective dimension on the ERP side.

This does not seem to be working. I am able to map and push L0 toL0 with like to like mapping but when I map parent to base, I get validation error.

Content (required):

For example if the hierarchy on EPM side is -

Then, total value rolled up in 'Total Entity' in EPM should be copied over to 111A in ERP Entity dimension.

Note that 111A is one of the base members within the hierarchy in both EPM and ERP.