If you have 2 resources and they both have the same message IDs except one has a special character in front of the message ID as shown below, then the second task will not have their dynamic rule enabled. This leads to a TIMEOUT situation when the second task comes UP.
The workaround is to create a static rule for ONE of the resources.
Release : 13.5 14.0
Component : OPS/MVS
Apply one the PTFs below according to the OPS release: