This rule ensures that blanket releases have been approved and have no activity after the purge parameter date. Any activity after the purge parameter date may indicate activity on related transaction in the PO transaction chain (for example, updates to a related receipt transaction). POs that fail this rule would eventually be picked up in subsequent archive or purge cycles when the activity date is within the purge parameter date. Furthermore, unapproved blanket releases may violate your audit rules and require further investigation.