The MVS™ callable system services, that are used to implement the APPC or LU6.2 protocols, provide return codes to report the status of the request. Normally, a failure causes:

• The connection to be marked as operative in error
• A symptom record to be created in the LOGREC data set. See Creation of LOGREC data set entries for details.

However, if RACF® receives one of the following three error conditions back from APPC, RACF tries the error again:

• Allocate_failure_retry
• TP_not_available_retry
• Resource_failure_retry

If after 10 times, RACF continues to receive an error return code, it is considered a non-retryable error and:

• The connection is marked as operative in error.
• A symptom record is created in the LOGREC data set. See Creation of LOGREC data set entries for details.