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Data page load failed due to wrong value in param pyModelName



A data transform LoadFirstPage mentioned as a data source in a data page D_FirstPage. The data transform is referring another data page D_SecondPage which is also has a data transform LoadSecondPage rule as data source. If the “Pass current parameter page” check-box is checked (for the LoadSecondPage) in the second data page (D_SecondPage) then at run time while the system is trying to initialize this data page (D_SecondPage) the data transform “LoadFirstPage” (mentioned in the previous data page) is getting called instead of “LoadSecondPage”. The issue is due to a wrong value is getting passed through the parameter “pyModelName”.

Error Messages

Not Applicable

Steps to Reproduce

  1. Create a data page (D_FirstPage).
  2. Define a data transform (LoadFirstPage) as a data source in the data page (D_FirstPage) rule form.
  3. Create another data page (D_SecondPage).
  4. Define another data transform (LoadSecondPage) as a data source in the second data page (D_SecondPage) rule form and check the check-box “Pass current parameter page” for the data transform.
  5. In the first data transform (LoadFirstPage) refer the second data page (D_SeconPage).
  6. Try to load the first data page (D_FirstPage).

Root Cause

The root cause of this problem is: In the Data page where you pass the current parameter page in as a data source, the new data source values were getting overridden with the existing parameter page values. 


This issue is scheduled to be resolved in Pega 7.1.9.

Published June 12, 2015 - Updated October 8, 2020

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