VAT Accounted for by Principal Contractor - which VAT code to use Ireland

We have 2 suppliers who invoice us and the invoice states 'Vat to be accounted for by principal contractor' - there is no vat on there invoice but I need to account for it for VAT returns etc 

the only vat codes i can see that may be relevant are RCGR and RCG - if I use these codes how will they affect the trial balance etc?  will they account for the vat and also take it off again ?   

Thanks