Message sequence number error

The error below is seen in MQ log.

09/09/07 04:07:08 - Process(18642.58) User(mqm) Program(amqrmppa)
AMQ9526: Message sequence number error for channel 'xxxxx'.

EXPLANATION:
The local and remote queue managers do not agree on the next message sequence
number.  A message with sequence number 1484994 has been sent when sequence
number 1484986 was expected.
ACTION:
Determine the cause of the inconsistency.  It could be that the synchronization
information has become damaged, or has been backed out to a previous version.
If the situation cannot be resolved, the sequence number can be manually reset
at the sending end of the channel using the RESET CHANNEL command.
----- amqrmtra.c : 3812 -------------------------------------------------------
09/09/07 04:07:08 - Process(18642.58) User(mqm) Program(amqrmppa)
AMQ9999: Channel program ended abnormally.

EXPLANATION:
Channel program 'xxxxx' ended abnormally.
ACTION:
Look at previous error messages for channel program 'xxxxxx' in the
error files to determine the cause of the failure.

How do we resolve this? Here's how.

bash-2.05$ runmqsc QMGR
5724-H72 (C) Copyright IBM Corp. 1994, 2005.  ALL RIGHTS RESERVED.
Starting MQSC for queue manager QMGR.



dis channel(xxxxx)
  2 : dis channel(xxxxx)
reset channel(xxxxx) seqnum(1)
  3 : reset channel(xxxxx)
AMQ8023: WebSphere MQ channel reset.
dis chs(xxxxx)
  4 : dis chs(xxxxx)
stop channel(xxxxx)
  5 : stop channel(xxxxx)
AMQ8019: Stop WebSphere MQ channel accepted.
dis chs(xxxxx)
  6 : dis chs(xxxxx)
start channel(xxxxx)
  7 : start channel(xxxxx)
AMQ8018: Start WebSphere MQ channel accepted.
dis chs(xxxxx)
  8 : dis chs(xxxxx)