1.Siza kukubiza ixabiso ngenani leematshini ozibuzayo, kwaye inkqubo ikhawuleza ukuze ukwazi ukwenza isigqibo ngoko nangoko.
2. Ukuba ixabiso kunye nemigaqo yorhwebo iyavumelana nawe, siza kukuthumelela i-invoyisi yeproforma. Nceda ulungiselele intlawulo nge-TT okanye nge-LC.
3. Emva kokuqinisekiswa kwentlawulo, siza kuthumela umatshini ngokwemigaqo yorhwebo kwi-invoyisi yeproforma.