Resolution:
Everytime the adapter polls the publication table, it picks up all or 'x' number of message to publish, where x is the polling batch size.

For example:
1) If there is no Polling Batch Size set, there are 10records in the publication table and group messaging size is 3; then adapter will pick up all the 10records at once and group them into groups of 3 records each and the last record is published as the 4th message.

2) If Polling Batch Size is 5 and group messaging size is 3, then adapter will pick up 5records first and publish them as two messages: first one with 3records and second with 2 records and repeats this for the next 5 records.

3) If Polling Batch Size is 3 and group messaging size is &gt3 then adapter will publish messages with only 3 records and group messaging size will not come into picture.

Essentially, adapter will try to group all the picked up records as per the group size specified and if there are less records picked up during one polling interval, it will still publish all of these in a single message.

There is no need for time out for enabling group messaging.

Relation between Polling Batch Size and Group Messaging Size