TPBL0071 or TPXL0071 MAILBOX TASK DELAYING DUE TO cause
If the value of cause is PACING COUNT EXCEEDED, the number of recipients processed while sending or saving a message exceeded the pacing count set in the System Options Table (SMRT).
If the value of cause is STORAGE OVERLOAD, the internal storage usage exceeded the overload threshold set in the SMRT.
In either case, the product suspends the processing of the message, allowing the mailbox facility to process other user's tasks. The product resumes processing at the end of the queue of mailbox facility requests after a short delay.
If the cause of this message is an overload and the overload still exists, the processing will be delayed again. When the overload condition is resolved, the product issues message TPXL0072.
TPBL0072 or TPXL0072 MAILBOX DELAY DUE TO cause ENDED
The storage overload condition described in message TPXL0071 has been resolved.