Ephesoft introduced a new feature in its Transact 4.1 versions known as Paragraph Extraction. This can be used to extract a value that lies in a particular paragraph present over the document.
It has come to our attention that when defining a Paragraph Extraction Rule for an Index field, the Start Pattern for the KV Extraction regular expression you are creating needs to be no longer than 31 characters in length. Any value inserted into the Start Pattern longer than 31 characters will return an error like the below:
This will be resolved in version 6.0.