In our TPM layouts, the promotions are planned at account group level and we need to disaggregate the values to customers/accounts. This data is entered in BPS layouts. Are there any standard SAP functions to disaggregate such data based on some reference data (say prior year deliveries)? It would be of great help if someone can give some inputs as it should be a common practice to enter data at the account group level and disaggregate to the account level. Thanks!