The regional planning team has inherited several reports with disconnected dimensions and inconsistent totals. Work through each report independently. The questions use 2024 planning and supplier scenarios alongside the retailer model, so a relationship that worked in the previous report isn't a reason to accept it here.
Start with the grain and the unique key. If every region repeats the same sales total, inspect the relationship before rewriting the measure. If the total is too large after a merge, check for duplicated keys and mismatched grains. A chart that looks plausible is weak evidence: verify the model itself. These exercises mix relationship repairs with decisions about which rows belong in each table.