When using the best effort resequencer, you must specify a group XPath expression, a sequence ID XPath expression, and the data type of the sequence ID (numeric or dateTime). These specify where the resequencer should find the group and the sequence ID in the messages and how to handle the sequence ID. In addition, you must specify either a maximum number of rows to select for each resequencing batch or a time window during which the messages included in one batch arrive.

Unlike the standard resequencer, the best effort resequencer has no knowledge about how the sequence is built. No further information is used by the best effort resequencer to perform its responsibilities.