SYMPTOM:
Users can navigate from one document to another using Edit links in Strategy Mobile 9.4.1. If a user navigates from Document A, which is prompted, to Document B, minimizes the app and restarts the iPad or leaves the app idle for a long period of time, then the user returns to the app, navigates back to Document A, reprompts it, and answers the prompt, the following error will occur:

(Message type is not persistent.MsiUserInBox: Failed to duplicate the message.)
Follow these steps in Strategy Mobile 9.4.1 to reproduce the error message.
CAUSE:
This is a known issue in Strategy Mobile 9.4.1.
ACTION:
This issue has been addressed in Strategy Mobile 9.4.1 iOS Update 6, upgrade to this version to take advantage of this fix.
WORKAROUND:
When error message pops up, tap "OK" and continue using app as usual. The error doesn't disrupt the execution of the document.