Sometimes you have a return code's number; other times you have its name. The descriptions above were listed in numerical order; the following list is in alphabetical order, so you can map from a return code's name to its numerical value.
CM_ALLOCATE_FAILURE_NO_RETRY 1 (X'01') CM_ALLOCATE_FAILURE_RETRY 2 (X'02') CM_CONVERSATION_TYPE_MISMATCH 3 (X'03') CM_DEALLOCATED_ABEND 17 (X'11') CM_DEALLOCATED_ABEND_BO 130 (X'82') CM_DEALLOCATED_ABEND_SVC 30 (X'1E') CM_DEALLOCATED_ABEND_SVC_BO 131 (X'83') CM_DEALLOCATED_ABEND_TIMER 31 (X'1F') CM_DEALLOCATED_ABEND_TIMER_BO 132 (X'84') CM_DEALLOCATED_NORMAL 18 (X'12') CM_DEALLOCATED_NORMAL_BO 135 (X'87') CM_OK 0 (X'00') CM_OPERATION_INCOMPLETE 35 (X'23') CM_OPERATION_NOT_ACCEPTED 37 (X'25') CM_PARAMETER_ERROR 19 (X'13') CM_PIP_NOT_SPECIFIED_CORRECTLY 5 (X'05') CM_PRODUCT_SPECIFIC_ERROR 20 (X'14') CM_PROGRAM_ERROR_NO_TRUNC 21 (X'15') CM_PROGRAM_ERROR_PURGING 22 (X'16') CM_PROGRAM_ERROR_TRUNC 23 (X'17') CM_PROGRAM_PARAMETER_CHECK 24 (X'18') CM_PROGRAM_STATE_CHECK 25 (X'19') CM_RESOURCE_FAILURE_NO_RETRY 26 (X'1A') CM_RESOURCE_FAILURE_RETRY 27 (X'1B') CM_RESOURCE_FAILURE_RETRY_BO 134 (X'86') CM_RESOURCE_FAIL_NO_RETRY_BO 133 (X'85') CM_SECURITY_NOT_VALID 6 (X'06') CM_SVC_ERROR_NO_TRUNC 32 (X'20') CM_SVC_ERROR_PURGING 33 (X'21') CM_SVC_ERROR_TRUNC 34 (X'22') CM_SYNC_LVL_NOT_SUPPORTED_LU 7 (X'07') CM_SYNC_LVL_NOT_SUPPORTED_PGM 8 (X'08') CM_SYSTEM_EVENT 36 (X'24') CM_TAKE_BACKOUT 100 (X'64') CM_TPN_NOT_RECOGNIZED 9 (X'09') CM_TP_NOT_AVAILABLE_NO_RETRY 10 (X'0A') CM_TP_NOT_AVAILABLE_RETRY 11 (X'0B') CM_UNSUCCESSFUL 28 (X'1C')