call of Stored Procedures in IS 4.6

When calling different Stored procedures in one flow, I have the following error:

com.wm.app.b2b.server.ServiceException: [B2BSERV.0026.9103] No parameter named RECEIVEDMESSAGE_IN

when I change the sequence of the call, I don’t have that error. It seems that the call to the second stored procedure takes the input parameters of the first stored procedure.

Thanks for helping me out!
claire