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Support Article

Error handling in Parse Delimited rule



User tries to use a 'PARSE DELIMITED' rule within Service File to read a csv file and map it to a clipboard page.
In the 'Parsing Details' section of the Parse Delimited rule, user has marked few fields as 'Required' and wants to know the significance of this 'Required' check and how one can debug any error.


If the data on the input stream is exhausted but parse details is marked as Required, parsing halts. Data processed so far remains available on the clipboard.

You can use below means to troubleshoot the behavior.


To debug a Parse Delimited rule, include a Java step containing the PublicAPI call:

myStepPage.putString("debug3", Long.toString(parseState.getStreamOffset()) );

where debug3 is a Single Value property. This function places the byte offset position of the parseState Java object into a clipboard value that user can review with the Tracer or Clipboard tool.

Using the Tracer

To trace the start and end of Parse Delimited rule execution, select the Parse Rules checkbox in the Rule Types to Trace area of the Trace Options panel.

Refer to below pdn link for complete details about the Parse Delimited rule.

As ServiceHelper class takes care of mapping of delimited parse rules, it can capture if there is any error. You can enable debug level logging on class com.pega.pegarules.integration.engine.internal.ServiceHelper, execute the use case and check PegaRULES.log file.

Published June 12, 2015 - Updated October 8, 2020

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