This provision is not mandatory, however most Member States use it in practice by host Member States' liaison offices to deliver documents to service providers in home Member States and it works well, in general, even in Member States which have not transposed it.
Lai gan šis noteikums nav obligāts, vairākums dalībvalstu to faktiski izmanto uzņēmēju dalībvalstu sakaru birojos, lai nosūtītu dokumentus pakalpojumu sniedzējiem piederības dalībvalstīs, un šāda sistēma kopumā darbojas ļoti labi pat tajās dalībvalstīs, kuras šo noteikumu nav transponējušas.