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Pega Platform Resolved Issues for 8.1 and newer are now available on the Support Center.

INC-142216 · Issue 596668

VBD performance improvements

Resolved in Pega Version 8.5.2

Performance issues were seen when running a decision funnel simulation. As part of the simulation, a VBD collection was created on the fly to store the metrics and linked to the simulation. Before each insert, which happened in batches of 500 records, there was a check if such collection exists. This check was required in earlier versions as the process relied on the VBD service being running, and the run would fail otherwise. Recently, VBD handling became more resilient and was updated to allow inserts even if the VBD server is down. If the VBD service is stopped before the simulation is completed, the simulation will continue writing records. When the VBD service starts again, it reads the backlog, and the simulation displays the final results. To adapt to this resiliency and improve performance, the system has been updated so that the VBD collection is not created and checked before the insert call, but only when the simulation is run or scheduled.

INC-143441 · Issue 608899

Strategy Simulation Runs made more resilient

Resolved in Pega Version 8.5.2

Intermittently, a decision funnel simulation would fail with particular strategy logic or a particular StrategyTracker would not contain the results for all components so the system would not be able to calculate input SRs. Handling has now been added to make the simulations more resilient so they will not fail with a null pointer error due to incomplete strategy inputs.

INC-144864 · Issue 599146

Unneeded AUC error percentage calculation removed for better system performance

Resolved in Pega Version 8.5.2

When generating snapshots of the ADM models, an inefficiency in the metric calculation for the AUC error percentage caused an excessive amount of memory to be allocated which could cause slowdown or require a system reboot. This has been resolved by removing the problematic AUC error percentage calculation as it is not used in the UI.

INC-148006 · Issue 605581

Enhancements added for very heavy use of strategy decision logic

Resolved in Pega Version 8.5.2

Recent updates were made to improve memory performance for scenarios where a single request primary page had tens of thousands of pages under an embedded pagelist property and the decision logic involved a strategy running on all the pages in that page list. To further improve performance, the array iterator has been modified and a DSS has been added that makes the threshold (50) in SSAExecutionContextIteratorFactory tunable.

INC-150854 · Issue 608368

Logic optimization disabled in offers

Resolved in Pega Version 8.5.2

Offers that should not be eligible to customers were passing through even though the offer was narrowed down to using “OR” conditions in the Engagement policies. This was traced to the logic optimization ignoring precedence, and has been resolved by disabling the optimization.

INC-138501 · Issue 592286

Added VBD support for CSRF token setting

Resolved in Pega Version 8.4.4

Attempting to open any VBD reports in the marketing portal for a simulation test caused the user to be logged out. Investigation showed that this happened when CSRF token check was enabled in System > Settings > Cross-Site Request Forgery, and was caused by the planner not passing the CSRF tokens in its Ajax calls. To resolve this, handling for the CSRF tokens has been added to the necessary Ajax calls.

INC-139574 · Issue 606143

Exception handling added for dataflow rule assembly

Resolved in Pega Version 8.4.4

A Blue Screen error was coming up in the Customer Service Web Chat Application after an agent accepted the incoming chat request and sent messages in the chatbox in the Interaction portal. This has been resolved by adding handling for exceptions that occur when inlining templates during dataflow rule assembly, when inlining templates, we weren't handling exceptions properly.

INC-140821 · Issue 600750

Resolved Intermittent Access Group Issue for GetBundleEventDecisionDetails

Resolved in Pega Version 8.4.4

When using a REST service that calls the GetBundleEventDecisionDetails activity and dataflow to send the treatment in multiple channels, intermittent access issue related errors appeared while running the activity in logs for multiple customers. This was traced to a missed use case for authentication, and has been resolved.

INC-142084 · Issue 599877

Support added for expression in strategy scorecards

Resolved in Pega Version 8.4.4

When invoking REST against a dataflow that had a strategy containing a scorecard that used an expression and the "Include model explanations option" was enabled in the Strategy configuration, the system failed with the error "PropertyValueInvalid .pxMaxScore Cannot cast the value (unknown) to double". This was traced to the Scorecard explanations failing during serialization when an expression was used, and has been corrected.

INC-143121 · Issue 610734

Timeout for loading predictors made configurable

Resolved in Pega Version 8.4.4

When using an extremely large number of predictors, the Report definition pzADMPredictorsFilter was suffering timeouts due to the time for loading predictors from the database exceeding the time threshold allowed. This has been resolved by marking the rule as editable to allow custom setting of the threshold according to need.

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