SAP Message WRF_PPW758 - Distribution chain &1 of site group not equal to DC &2 of header data

Diagnosis
You tried to add site groups that involve distribution chain &V1&.However, distribution chain &V2& in the header data differs from it.

System Response
Processing is cancelled

Procedure
Change the distribution chain in the header data to match thedistribution chain of the site groups. You will not be able to save thesite groups otherwise, because sites can generally only be assigned toone distribution chain.