[ibr-154-ae]-Invoice Transaction-type code (BTAE-02) must be provided from the Invoice Transaction Type Code List. It should be a string consisting of no more than 8 characters, exclusively comprising of 0 and 1. The value in this field should be based on the sequence of transaction present in the invoice (as per list order), If applicable '1', and if not applicable '0' .
ibr-154-ae/ubl:Invoice | /cn:CreditNotestring-length(cbc:ProfileExecutionID) <= 8 and (matches(cbc:ProfileExecutionID, "^[01]{1,8}$"))