Solution : https://service.sap.com/sap/support/notes/128412 (SAP Service marketplace login required)
Key words : 
sd pricing procedure condition types, additional key words prsqu, foreign price source exists, foreign price source, attached advance correction, system explicitly checks, price source, sd document, xkomv-prsqu, system copies
Related Notes : 
       
| 183330 | Incorrect transfer of conditions | 
| 91830 | Performance in pricing |