Error on Item Export
Error Message: 'a) No Matrix Value mappings found; fieldId: b) Matrix value lookup did not return a result'
Reason: This occurs when a particular Matrix option field’s value mapping is missing in the Magento Matrix Value Mapping Record. a) NetSuite Colour was not mapped. b) When Magento Colour was left blank.
Find the specific option value id in Magento and update the Magento Matrix Value Mapping Record accordingly.