# RXS_nextUnqNbr() Use this subprocedure to easily obtain the next sequential number from data area RXS/RXSUNQ. Useful when creating IFS files that need to be unique. ## Subprocedure Prototype ### IBM i V5R4+ | Field | Description | |---|---| | ` D RXS_nextUnqNbr pr 15 0` | Returns the next available number from the data area RXS/RXSUNQ. |