How to fix Destination_Validate errors ( Destination Validate ) Destination field errors? This relates to the data layout (mapping) and the field type. If your data sync is failing because of the above please check
Things to check:
1) You do not need to send empty fields across to target systems - An easy fix is to disable fields you do not want to sync. See below cheat video.
2) Is the data you are trying to sync boolean in type? Check and amend the settings in your data