REPLTRANS2BIG, Transaction xxxx of size yyyy (pre-filter size ffff) too large to be accommodated in the zzzz pool
MUPIP Warning: This indicates that the size of the incoming transaction is larger than what the receive pool can accommodate. If a replication external filter is in use on the secondary side, the actual received data size is recorded in the pre-filter size ffff and the data size after the filter transaction is recorded in the size yyyy.
Action: The receiver server would have shut down because of this error. Shut down the update process and any helper process on the secondary using MUPIP REPLIC -RECEIV -SHUT -TIME=0 followed by a MUPIP RUNDOWN -REG "*". Restart the secondary with a bigger receive pool size enough to accommodate the size yyyy.