When issuing:
TSS ADD(RDT) RESCLASS(resclass) RESCODE(101) ATTR(MASK) ACLST(NONE,READ,UPDATE)
...where 'resclass' is the name of the Resource Class to be created, the following error occurs:
TSS0428E INVALID RESOURCE TYPE FOR ATTRIBUTE: MASK
For Resource Classes with RESCODEs of x'101 through x'13F', the Resource will always be Maskable, so ATTR(MASK) shouldn't be specified. So the command:
TSS ADD(RDT) RESCLASS(resclass) RESCODE(101) ACLST(NONE,READ,UPDATE) ...
where 'resclass' is the name of the Resource Class to be created should be successful and the Resource Class Maskable.