A developer is creating an IBM Sterling B2B Integrator (SBI) Business Process (BP) using the
Graphical Process Modeler (GPM). A Mailbox Delete service is being used to delete a specific
message from a mailbox. The developer is assigning the parameter MessageId to delete in the
name-value pair in the Service Editor. There are other services being used in the BP that create
the XML tag MessageId in Process Data. Which message mode in the GPM Service Editor will be
required to ensure that the value of MessageId set in the Service Editor will be used?

A.
Message from Service
Input Msg tab: Allow Message Write

B.
Message from Service
Input Msg tab: Allow Process Data Write

C.
Message to Service
Output Msg tab: Obtain Message First, then Process Data

D.
Message to Service
Output Msg tab: Obtain Process Data First, then Messages

Explanation: