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Level 6

This is quite simple....as simple as playing a trick. I would add a hidden field on the form and set the Binding to "Normal". Then under preSave event I would add code to like following....this.rawValue = <UUIDField>.rawValue;

And make following change to the UUID request process

if (<BackupUUID>.isNull) {

          //get the UUID

          //that means you will request UUID only if the form is rendered of the first time certainly not after user saves it.

}else {

     <UUIDField>.rawValue; = <BackupUUID>.rawValue;

}