Extended Error Descriptor (EED)

The extended error descriptor (EED) passes error information between RTM1 and RTM2 and also between successive schedules of RTM1. The EED is described in z/OS® MVS™ Data Areas in http://www.ibm.com/systems/z/os/zos/bkserv/. It is pointed to by:

• RT1WEED (RT1W +X'3C')
• TCBRTM12 (TCB+X'104')
• RTM2 SVRB +X'7C' The EED pointed to by RTM's SVRB is not always valid, because RTM2 releases it early in its processing.

Important EED fields are:

EEDFWRDP (EED+0)

Either the pointer to the next EED on the chain, or zero

EEDID (EED+4)

Description of contents of the rest of the EED:

BYTE 0

= 1 - register and PSW information EED

 

= 2 - dump parameters EED

 

= 3 - machine check handler EED

 

= 4 - reserved

 

= 5 - dump storage range EED

 

= 6 - subpool list EED

 

= 7 - original error data EED (includes errorid)