Raise this issue with the relevant configuration team at your site for review and optimisation.
Issue
Forms may open slowly due to read-only fields configured within the assessment form pulling back large amounts of data. Error:
Description: GenerateScreen@330: showFormIndex()@40: preprocess@435: addLockUnlockData@40: Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction. File: /rio/ScreenGenerator2/screengen.asp Line: 230
Cause
This can happen when a read only field does not restrict data using WHERE clauses in its read only SELECT statements, resulting in excessive data retrieval.