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Support Article

Multiple properties mapped to the same column in the database



Database Class Mapping tool creates duplicate entries in the database.

Error Messages

Not Applicable

Steps to Reproduce

  1. Navigate to Designer Studio > Data Model > Classes & Properties > Database Class Mappings.
  2. Click the New external data base table class mapping button.
  3. Select the below options:

    Database - PegaDATA
    Table - pr_history
    Class - PegaSample_Data-pr_history

    Columns are mapped to the properties. In particular, pyLabel > pyLabel and pyMemo > pyMemo.
  4. Change pyMemo to map to pyLabel, such that two columns map to the same property.
  5. Click Submit.

Root Cause

A defect in Pegasystems’ code or rules. Incorrectly mapping two different properties to the same column produces two rules having the same name with pzInsKey differing by only a few milliseconds.


This behavior is currently not supported and is scheduled to be supported in a future Pega release.

Published March 21, 2018 - Updated December 2, 2021

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