0 0 NORMAL ISSUE
1 1 CORRECTION TO A PREVIOUSLY ISSUED PRODUCT (COR)
2 2 AMANDMENT TO A PREVIOUSLY ISSUED PRODUCT *AMD)
3 3 CORRECTION TO A PREVIOUSLY ISSUED AMENDED PRODUCT (COR AMD)
4 4 CANCELLATION OD A PREVIOUSLY ISSUED PRODUCT (CNL)
5 5 NO PRODUCT AVAILABLE (NIL)
6 6 SPECIAL REPORT ( SPECI)
7 7 CORRECTED SPECIAL REPORT (SPECI COR)
15 15 MISSING VALUE
