RPXD0022W

The time to extract references seems excessive. It was %1 milliseconds.

It is taking a long time to extract data from your response for your references.
None.
Examine each of the regular expressions for your references. Make sure they don't have .* with no qualifiers or other poorly formed constructs. When you write the regular expression in the test you can click verify to get an idea of how long it is taking to execute.