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Support Article

UnresolvedAssemblyError generated while trying tocreate new rule



Unable to create, update or save or perform save as of a rule in production rule set with Pega 7.1.8.

Error Messages

Getting the below error while end user accessing the instance.

•** ** No code generated for expression (5) - caught DatabaseException while trying to save conclusion Property!PYPAGESANDCLASSESNAME: Exception saving ClipboardPage instance via e-tier bean: code: <none> SQLState: EJB Exception: : java.lang.RuntimeException: Problem during method invocation (saveInOwnTransaction) Message: at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethod(

Steps to Reproduce

Try to save, save as, create new rule in Production server using production rule set.

Root Cause

A defect in Pegasystems’ code or rules : The compiled version of the dofuassembly activity saved in the database is not correct.


Perform the following local-change:

1. Go to the SMA > Advanced > Virtual Rule Table Cache Management:
a) In the Rule Class field enter: Rule-Obj-Activity
b) In the Instance Name field enter: !dofuassembly

2. Then click on the “Lookup Virtual Table Cache Detail” button. Observe the activity listed.
3. Click on the “Reassemble Candidates” button and then go back to Pega and try to do the “save as” using the Out-of-the-box (OOTB) activity again.

Published July 17, 2017 - Updated October 8, 2020

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