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Executing 2 offer bundles in a single interaction exception



Multiple emails must be sent for a single user in a single interaction.
A single campaign is created to load a single user. In the Strategy, two Offer bundles are created for the user. Both are fixed bundles with different names.

For example:

User 111111:
Bundle Name: Bundles1
Bundle Children: Offer 1, Offer 2

Bundle Name: Bundle 2
Bundle Children; Offer 1, Offer 2

When the Offer flows execute for the bundle parents, concurrency error occurs and the Offer flows are executed.

Error Messages

com.pega.dsm.dnode.api.dataflow.StageException: Exception in stage: Process Offers
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(
at java.util.HashMap$
at com.pega.mkt.offer.OfferEngineUtils.processBundles(
at com.pegarules.generated.ddf.ra_action_df_processoffer_8bc3bb8ed89f4acb68002cc0fb5de385$1$1.onNext(
at com.pega.dsm.dnode.api.dataflow.DataFlowStageBatchProcessor.commitBatchInternal(
at com.pega.dsm.dnode.api.dataflow.DataFlowStageBatchProcessor.commitBatch(
at com.pega.dsm.dnode.api.dataflow.DataFlowStageBatchProcessor.onCompleted(
at com.pega.dsm.dnode.api.dataflow.DataFlowStage$StageInputSubscriber.onCompleted(
... 23 more

Steps to Reproduce

  1. Create an Audience and a Campaign.
  2. Set up a bundled Offer and duplicate it. However, ensure to change the bundle name.

Root Cause

A defect in Pegasystems’ code or rules.


Apply HFix-45603.


Published December 13, 2018 - Updated December 2, 2021

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