If the contracting authority has not conducted any preliminary market engagement, there is no requirement under the Act to publish the reason for not doing so in the tender notice.
Os nad yw’r awdurdod contractio wedi ymgysylltu’n rhagarweiniol â’r farchnad o gwbl, nid oes gofyniad o dan y Ddeddf i gyhoeddi’r rheswm am hynny yn yr hysbysiad tendro.