After a lot of research, i couldn't find any useful information that could be of use onto my problem. My problem is how i can send business data from BPMS (bonita, tibgo, bizagi ....) to openERP via web services?.
To send data from Bonita BPM workflow (sorry I'm only familiar with this solution) to any external system you can use "connectors". Bonita BPM provide a SOAP 1.2 Web Service connector that should allow you to push your process data to openERP.
You can refer to the Web Service connector tutorial form more information about the actual configuration of the connector.