The PPR model imbeds and enforces a significant number of consistency rules. It is important to be able to check that those rules are not broken. You can run the PPR data checkers to check and repair, when possible, the data.
About PPR Data Running the PPR Data Checkers ImplementLinkPrdPrcsChecker ImplementLinkPrcsProdSysChecker ImplementLinkProdSysRscChecker PPRLinkChecker MfgProductInstChecker