Developer Tool Guide

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Troubleshooting Configurations

I created two configurations with the same name but with different cases. When I close and reopen the Developer tool, one configuration is missing.: Data viewer and mapping configuration names are not case sensitive. If you create multiple configurations with the same name but different cases, the Developer tool deletes one of the configurations when you exit. The Developer tool does not consider the configuration names unique.
I tried to create a configuration with a long name, but the Developer tool displays an error message that says it cannot not write the file.: The Developer tool stores data viewer and mapping configurations in files on the machine that runs the Developer tool. If you create a configuration with a long name, for example, more than 100 characters, the Developer tool might not be able to save the file to the hard drive.

To work around this issue, shorten the configuration name.
My preview data failed for a customized data object.: The Developer tool cannot display data in the Data Viewer view if the customized data object performs a data type conversion and pushdown optimization is not set to source.

To work around this issue, configure pushdown optimization to push processing to the source.