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Support Article

Unable to insert data in the database after schema changes



Unable to insert data in the database after schema changes. The user configuration has an external table with column,YOUR_COLUMN_NAME, and an exposed property, your_column_NAME.

Error Messages Database-BadTableMapping-TooManyProperties your_data_class your_schema.your_table PegaDATA your_column_NAME

Steps to Reproduce


Root Cause

A defect in Pegasystems’ code or rules. Two properties in the class hierarchy have the same name. As a result, during data retrieval from the database to determine the mapping for the table, an incorrect property is chosen and the mapping fails.


Perform the following local-change:

On the External Mapping tab for the class, explicitly map the column to the property. In this case map column YOUR_COLUMN_NAME to property your_column_NAME


Published March 8, 2018 - Updated October 8, 2020

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