Today I encountered an error during update records using Entity Framework. Fortunately we found a quick fix.

This is an error we encountered:

Unable to update the EntitySet Table because it has a DefiningQuery and no <InsertFunction> element exists in the <ModificationFunctionMapping> element to support the current operation

In this quick post you are going learn the way to overcome the titled error.

Fix for an issue as shown below:

Simple solution to this error is to create database tables with primary keys.

Simple to fix.