Final register contents

The routine must leave the register status as follows:

Register 1:

Address of the parameter list passed to the exit on input

Register 2–14:

Restored to entry contents

Register 15:

Return code:

X'00' (0): Processing successfully completed
X'01'–X'4F' (1–79): Definition selection failed; the SDDLU exit remains active. VTAM® issues message IST1183I displaying the return code.
X'50'–X'7F' (80–127): Reserved
X'80'–X'EF' (128–239): Definition selection failed; the SDDLU exit is deactivated. VTAM issues message IST1183I displaying the return code.
X'F0'–X'FF' (240–255): Reserved

Note: When this return code is nonzero, all dynamic definitions in this request fail.