I had a requirement of adding a custom button on Sales Order UI which enabled with OBN navigation to another custom screen. For this requirement I had tried of creating an extension field at the root of Sales Order which will be populated with a value in the before save event.
This value is alternative key element data of the other custom business object on which I had set of UI's out of which I am trying to assign QA to get navigated to from Sales Order UI using the custom button.
On the Sales Order UI using extensible explorer I had created the OBN button on one of the available section groups and the data is being populated to the extension field in before save.
I am able to see the extensible data on the UI of Sales Order and button on the section group but the button is not enabled it is in greyed out mode and I cannot perform any action using this button.
Following are the configurations on the Sales Order UI I did for the extension to have the OBN Button
Please suggest why the button is not enabled and how to enable it on the UI to get navigated to the custom Screen.