I would check the Excel exporter template and verify if every column is still valid. If an attribute or association used in the export has been renamed or deleted in the domain model, the Excel Exporter template will not automatically be updated.
Please run MxModelReflection and verify if the Excel exporter template is still valid, that might solve your issue!
Hi Ishwari,
Check the data flow leading to the “addAttribute” method and verify that all required data and object references are set properly.
Review the code in the WIM.ACT_ExporttoExcel_WIMEquipment
Java action's GenerateExcelDoc
method and verify if any potential null values are being passed.