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Home » Modeling » MDT (Model Development Tools) » [BPMN2] Constant validation error
[BPMN2] Constant validation error [message #799179] Wed, 15 February 2012 16:02 Go to next message
Darie Moldovan is currently offline Darie MoldovanFriend
Messages: 67
Registered: November 2010
Location: Darmstadt, Germany
Hello @all,

I'm constantly getting some strange errors from the validator at runtime when creating a bpmn2 model. Even with the official example from omg the validator reports similar errors (please see in the attachment). Especially the error "the required feature 'conversationAssociations' of Collaboration testName must be set" is not very elucidating. I also admit that it is not clear to me what is missing there.

The strange thing is, I get these errors with *every* bpmn2 model I open in Eclipse. But not immediately, just when I validate the model by hand (right click on the root element in the Bpmn2 Editor > Validate). And even if I don't validate them, these errors cause other exceptions to be thrown, because I'm working with three languages which depend on each other. So, simply forgetting about the error does not work for me Smile

I'm using:

Eclipse Indigo Build id: 20110916-0149
BPMN2 Project Feature Version

Any help is kindly appreciated.

Best regards
  • Attachment: error.jpg
    (Size: 143.68KB, Downloaded 450 times)
Re: [BPMN2] Constant validation error [message #815354 is a reply to message #799179] Wed, 07 March 2012 14:51 Go to previous message
Henning Heitkoetter is currently offline Henning HeitkoetterFriend
Messages: 21
Registered: April 2010
Junior Member
Hello Darie,

thanks for pointing this out. There are some differences between the various exchange formats of the BPMN 2 specification. So far, we have used the more (too) restrictive one.

I have now loosened the settings to match the format that requires less attributes. More info at and
You should be able to update to the latest version by using the update site (enter this URL @ Help->Install new software).

BTW: what was (wrongly) declared as missing before was a child of type ConversationAssociation for the Collaboration element (a right-click on the Collaboration element offers you the option to create one).

Best regards,
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