Fixing Power Automate Error – A Binary Operator with Incompatible Types When working with Power Automate , we often encounter errors that seem simple but can be quite confusing. One common error that many developers face when using List rows or filters in Power Automate is: Error: A binary operator with incompatible types was detected. In this post, I’ll explain why this error happens and how you can fix it quickly so your flows run smoothly. Why This Error Happens This error usually appears when you are trying to apply a filter query in a List rows action and you are comparing two fields with incompatible types. For example: Comparing a lookup field directly with a text value. Comparing an integer field with a string. In Dataverse, certain fields, like lookups , require you to use their GUID values in the filter. If the types don’t match, Power Automate throws the binary operator error. How ...