I output WTO it in my recovery I always use the same base register and
branch around the eyecatcher so I can compare program name to insure I am
using the right regs whether that's SDWASRSV or SDWAGRSV so In my latest
abort 201 (invalid ECB list) my regs where in SDWASRSV GRSV was the wait
module.
There are routines that format this information so that you do not need to
deal with the specific SDWA fields.
Use IPCS and run STATUS FAILDATA and STATUS WORKSHEET.
Or read the comments that are provided in IHASDWA:
SDWAGRSV DS0CL64 - General purpose registers at time of error.
SDWAEC1