Change message type property of message in Orchestration

Question

Can we change the message type property of message  in Orchestration ?
I tried to change the message type property of message  in Orchestration(in expression shape) as follows:
MessageName(BTS.MessageType)="20";
But admin console showed the error that it is read only property.
How we can change it ?
Prakash

Answer 1

No you can't change the message type context property. If you have some process which is depend on message type value, then construct a new message whose targetnamespace and rootelement matches to the value which you want to set. With something like..
create a completely new schema with the fields/ data structure same as the one where you want to change the message type
Set the newly created schema's target namespace and rootelement to the one which you want to change. For example if you want to change the message type values as
http://samenamespace#sampleRootElement, then set the target namespace of the newly created schema as "http://samenamespace" and its root element
as "sampleRootElement"
Then construct this new message from old message using message assignment shape or transformation using map. This way the newly contricted message will have the message type value as want you want to change. This is the only way.
Moreover you can't set the message type value as "20" as you have shown, its targetNamespace#rootelement of the schema, not any custom value. If you have any process which depends on this custom value assign this value to a custom context property
using property schema.
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