Hi @VeerendraC: By default Save option will be available out of the box for assignments. Can you please help to understand if you have configured separate button for this feature? If this is the case, I hope there is some customisation. Would you be able to share the configuration of the save button (Actions tab of button properties).
HI @VeerendraC: I don't see a issue with the configuration. Please check if this is the same button rendered at runtime using live-UI. Also can you please help to trace the save action to check for any declare trigger?