This is root element of this document which contains name space definitions for the document elements. Header for receipt of pending return container Describes the physical wearhouse id. Specifies the RMA number of the pending return. Specifies the customer order number of the pending return. Timestamp of pending container receipt. Pending return container_id This type can hold a string of max length of 20 characters. This type can hold a string of max length of 12 characters. This type can hold a string of max length of 48 characters. This type can hold a number of digits count 10.