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I have built an external content type based on a database table. Originally, a certain column was of type int, but recently it has been changed to decimal. Now I get an error in the ReadList and ReadItem operation of the content type.

Data source element xyz is of data type decimal, the mapped item is of data type Int32. These data types cannot be converted automatically at runtime.

Is there a way to repair the content type? Especially, what is meant by "mapped item"?

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The best way I found so far is to remove the column from the table, then update sharepoint and add the column again. By this method you can avoid deleting the complete content type.

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