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

In order to fix this error, please check this:

Make sure you have ''xxxxxxx" table in your database,

Make sure you have the Primary Key in that table,

If the table and Primary Key are existing, please updated the Entity map and publish again.

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