F5 Error 3039dcb8

All users that are attempting to access their email through OWA were receiving an F5 error message (3039dcb8). They are not being prompted for a PIN. They are, however, reaching the OWA splashpage we've had already set up. The F5s we are using are running 11.6.1. I have recently added nodes and pools on LTM, but these users should not be utilizing the new pools. Also I have made alterations to the iRules to direct traffic.

 

Initially I'm thinking this is an APM issue, but I'm not sure. Has anyone experienced this error message? I've having difficulty finding it online.