Kusukela ngosuku lokuthengwa kwemikhiqizo yokwenziwa eyinhloko, ungajabulela isevisi yonyaka ngemuva kokuthengisa yokuqinisekiswa kwekhwalithi, kepha udinga ukulandela lezi zimiso ezilandelayo:
1. Ukwazi ukukhombisa ikhadi lethu lewaranti elivumelekile.
2. Umkhiqizo awuhlukanisiwe, elungisiwe noma elungiswe yodwa, futhi uphawu lwe-QC aluphelele.
3. Lapho umkhiqizo usetshenziswa esimweni esijwayelekile, kunezinkinga zekhwalithi.