[Solved/Solution] Form Mode automatically changed from OK Mode to Update Mode

Form Mode automatically changed from OK Mode to Update Mode while click on Customized Tab in system form; 

Created new tabs along with the existing tabs in SAP Default Screen. This works fine in Add Mode. 

But in Ok Mode, while click on the newly created Tab, Form Mode got changed to Update Mode.

That can happen because, one of the controllers of your tab gets changed, there's value when it get focus. (May be a text box or any controller)

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If that behaviour is compulsory, then consider to change that Item's (controller's) 'AffectsFormMode' property as below.

YourController.Item.AffectsFormMode = false;

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