Solution : https://service.sap.com/sap/support/notes/313486 (SAP Service marketplace login required)
Key words : 
destination path / web server mimesdestination path, bbp / crm internet sales support package, sap@web installation guidewhich, additional key words procurement, sap b2b procurement system, electronic commerce e-business, bbp / crm component, server andthe connection, flow execution failed, iac object receiver
Related Notes : 
       
| 450366 | SAPKU30007: Support Package 7 for EBP 3.0/CRM 3.0 | 
| 437284 | SAPKU30005: Support Package 5 for EBP 3.0/CRM 3.0 | 
| 433032 | SAPKU30004: Support Package 4 for EBP 3.0/CRM 3.0 | 
| 424198 | SAPKU30002: Support Package 2 for EBP 3.0/CRM 3.0 | 
| 396619 | No IAC-packages on the EBP/CRM 2.0 installation CDs | 
| 391805 | SAPKU20B12: Support Package 12 for BBP / CRM 2.0B | 
| 389570 | SAPKU20B11: Support Package 11 for BBP / CRM 2.0B | 
| 389568 | SAPKU20C04: Support Package 4 for EBP 2.0/CRM 2.0C | 
| 380294 | Shopping basket: performance when starting | 
| 373138 | SAPKU20C02: Support Package 2 for EBP 2.0/CRM 2.0C | 
| 373137 | SAPKU20C01: Support Package 1 for EBP 2.0/CRM 2.0C | 
| 373126 | SAPKU20B09: Support Package 9 for BBP / CRM 2.0B | 
| 371716 | SAPKU20B08: Support Package 8 for BBP / CRM 2.0B | 
| 352224 | SAPKU20B07: Support Package 7 for BBP / CRM 2.0B | 
| 337036 | SAPKU20B06: Support Package 6 for BBP / CRM 2.0B | 
| 330392 | SAPKU20B05: Support Package 5 for BBP / CRM 2.0B | 
| 325651 | BBPSTART does not work after installation of SP4 | 
| 325325 | JavaScript Error after SupportPackage installation | 
| 325149 | Publishing IAC objects | 
| 322849 | SAPKU20B04: Support Package 4 for BBP / CRM 2.0B | 
| 315054 | SAPKU20B01: Support Package 1 for BBP / CRM 2.0B | 
| 313969 | SAPKU20B03: Support Package 3 for BBP / CRM 2.0B | 
| 313847 | Workaround: SAPWebFramework.html could not be included | 
| 313842 | SAPKU20B02: Support Package 2 for BBP / CRM 2.0B | 
| 307782 | Procedure fails during logon | 
| 307764 | ITS is unable to open SAPWebFramework.html | 
| 306515 | ITS Template corr. BBP/CRM ISA(non Java) from 2.0B onwards | 
| 303515 | SAP Bus.-to-Bus. 2.0B Installation: Composite Note |