<af:commandButton id="shtasr" text="#{msg['go.alsoServesByRevDate']}" immediate="true"
action="#{attrs.sheetHandler.alsoServesBO.alsoServesByRevDate_click}" partialSubmit="true"
visible="#{!attrs.sheetHandler.isEnrChartItem}" partialTriggers="pt1:toolbar:claimBtn"/>
<af:spacer width="1px" height="1"/>
it says reference ID pt1:toolbar:claimBtn does not exist. how to resolve this issue in 12.2.1