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Changing Data Type of Primary Column now allowed in Model Driven Apps


Hi Folks,

Do you know you can change the Data type of an Primary column between Single Line of Text and Autonumber even after creation of your entity specifying a defined Primary Name Column. There is a catch….

So let’s see…

I first created a brand new Table called Demo Table and kept the Primary Column as Single Line of text. Earlier once the table is created, you will not be able to change the Primary name column if you wish to, the only way was to delete the table and re-create it with the correct type. But now you can change the type of the column at least to a unique autonumbering.

I want the Primary Name column to be unique, but when I look at the data in my table captured, I see many duplicates.

So let’s change the data type of the primary column data type to Autonumber.

The primary field look as below initially…

Select the Data Type available…

Now Select the Autonumber from the drop down available…you can optionally specify any custom prefix which you want for your Autonumber…and click Save and publish the customizations.

Now go back to your model driven app and then try creating a new record for the respective entity.

Since it was a primary field column, it is by default made mandatory…what’s up…the Autonumber column data type change is not reflecting….this is the same even if you check and publish the solution multiple times. Neither you can’t specify the field value because you already choose this to be an Autonumber and system should create it by itself.

If you were scratching your head, then this simple tip will help…

Just make the field read-only from the form where this field is being referred, so you don’t need to really enter value for it…then publish the customizations.

Once you have done…

Now try to save the record..

There you go, you can see an Autonumber being populated in the primary field…




Author: Pavan Mani Deep Y

Technology geek who loves sharing my leanings, quick tips and new features on Dynamics 365 & related tools, technologies. An Azure IOT Enthusiast….

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