Do you have an internal SAP Catalog (like SRM-MDM)? If yes, please check the call structure regarding Outbound Handler. It is needed only for external catalogs. Incase internal catalog is being used, then this can be turned off mataining
BYPASS_OUTB_HANDLER with value 'X'
Make sure the following values are also present after the HOOK_URL parameter:
Paramneter Name - returntarget
Parameter Value - _top
Type - Fixed Value
Parameter Name - ~caller
Parameter Value - CTLG
Type - Fixed Value
Parameter Name - ~OkCode
Parameter Value - ADDI
Type - Fixed Value
Best regards,
Anita