The return codes for the halt and trace functions are as follows:
──────────────────────────────────────────────────────────────────────── 0 RXARI_OK The function completed successfully. ────────────────────────────────────────────────────────────────────── 1 RXARI_NOT_FOUND The target REXX procedure was not found. ────────────────────────────────────────────────────────────────────── 2 RXARI_PROCESSING_ERROR A failure in REXX processing occurred. ────────────────────────────────────────────────────────────────────────