| BB | Billback | 
| CA | Cash | 
| CI | Consolidated Invoice | 
| CO | Corrected | 
| CR | Credit Memo/Invoice | 
| DR | Debit Memo/Invoice | 
| DU | Duplicate | 
| EB | Engineering Final Bill | 
| EF | Engineering Installation, Right to Use, Final Bill | 
| EI | Engineering Installation, Final Bill | 
| ER | Engineering Right to Use, Final Bill | 
| IB | Installation Final Bill | 
| IF | Material, Engineering, Installation, Final Bill | 
| IR | Installation, Right to Use, Final Bill | 
| IU | Material, Installation, Right to Use, Final Bill | 
| MC | Material Credit Invoice | 
| ME | Memorandum | 
| MF | Material, Engineering, Final Bill | 
| MI | Material, Installation, Final Bill | 
| MR | Material, Right to Use, Final Bill | 
| MS | Material Final Bill | 
| PB | Partial Bill | 
| PR | Product (or Service) | 
| RB | Right to Use | 
| RE | Rebill | 
| RF | Material, Engineering, Right to Use, Final Bill | 
| UF | Material, Engineering, Installation, Right to Use, Final Bill |