Solution : https://service.sap.com/sap/support/notes/79703 (SAP Service marketplace login required)
Summary : 
      SAP Note addresses error G4026, which appears during the posting of an invoice connected to a purchase order without a goods receipt or with non-valuated goods receipt. Key issues addressed involve Joint Venture (JV) adjustments which fail when the purchase order's cost objects don't carry JV information, or the goods are non-valuated. Erroneous postings do not occur with valuated goods or when JV details are present on cost objects. Solution entails a referenced program change to address these specific scenarios within the module integrating Materials Management (MM) and Joint Venture Accounting (JVA). Keywords include JVA, MM integration, and 20c_hp4 updates.
Key words : 
mm integration manager    20c_hp4, additional key words jva, symptom error message, jv document line 001, -valuated goods received, valuated goods received, creating invoice received, goods received, additional comments, invoice received
Related Notes : 
       
| 93554 | @3Z@ 4. collective oil fixes/transports after HP34 | 
| 69082 | JV Error G4026 when entering invoice verification |