Solution : https://service.sap.com/sap/support/notes/1086345 (SAP Service marketplace login required)
Key words :
eban-eprofile ne space, set bpueb=space, force bpueb=space, extended classic scenario, po price manually, po price adoption, valuation price solution, valuation price, eban-bpueb, extendedclassic scenario
Related Notes :
571860 | BAPI_PO_CREATE1: Price is not transferred |
422624 | ME51N Order price adoption: Additional info |
393367 | Price is not transferred from Preq to PO |