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Error during file export and import for decision table rules



An error occurs while exporting or importing a file for decision table rules in an environment.

Error Messages

The Flow Action post-processing activity pzImportToExcel failed: java.lang.NoSuchFieldError: CREATE_NULL_AS_BLANK

Steps to Reproduce

  1. Open any decision table
  2. Check-out the rule
  3. Import or export a file for decision table rules

Root Cause

A different version of Apache POI (POI 3.17) was used which was not shipped by default.

By default, Pega ships Apache-POI 3.15 which contains the following field in 
  • @Removal(version="3.17") 
  • @Deprecated 
  • Public static final MissingCellPolicy CREATE_NULL_AS_BLANK = MissingCellPolicy.CREATE_NULL_AS_BLANK; 

By importing Apache-POI 3.17, user has explicitly overridden the jar with an incompatible version of Apache-POI. That field is removed from the class. 


An enhancement request, FDBK-27492, has been created for consideration by Pega Product Management.


Published August 28, 2018 - Updated October 8, 2020

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