I don't need to pay the data protection fee - do I need to tell the ICO?

Rhagor o wybodaeth am beth i'w wneud nesaf os ydych chi'n meddwl nad oes angen i chi (fel unig fasnachwr), eich busnes, eich sefydliad neu’ch elusen gofrestru gyda'r ICO neu dalu ffi diogelu data.