DISK - ASMA057E Undefined operation code - #WTO /STMG

Products

• DISK BACKUP AND RESTORE

Issue/Introduction

During the installation of the USERMOD3  the following errors are encountered: 

** ASMA057E Undefined operation code - #WTO /STMG
** ASMA435I Record 122 in SSSS.DISK125.CCUWMAC(#WTO) on volume: TTTTTT
** ASMA057E Undefined operation code - #WTO /LMG

Resolution

USERMOD3 provided in the CCUWJCL of DISK/OS should be used. 
On the OPTABLE parm of the HLASMCL exec -  ZOP or UNI should be used and not XA.