| Products | Versions | 
|---|---|
| TIBCO Substation ES | - | 
| Not Applicable | - | 
Description:
 When multiple CICS interfaces are connected to one CICS region, transactions may abend. Abend codes AAL8 and ATDC have been observed for these transactions. The cause of the problem is a deadlock in CICS 5.1, for which IBM has provided an APAR to rectify the situation. When using CICS TS 5.1, IBM APAR PM98235 should be applied to CICS.
 Symptoms:
 Transactions abend with codes such as AAL8, ATDC have been observed.
 Cause:
 This is a CICS deadlock issue identified by IBM.