The data for processModel could not be read from the XML

samk over 7 years ago

Hi,

We are getting the below error while inspecting the application in Appian V 16.1
"processModel 000bdca2-36f6-8000-f92f-7f0000014e7a 1261: The data for processModel [id=1261 uuid=000bdca2-36f6-8000-f92f-7f0000014e7a] could not be read from the XML. Cause: java.lang.RuntimeException: Failed to unmarshal XML. javax.xml.transform.dom.DOMSource@d8b1da3 (APNX-1-4071-005) " for all the process models in the application. We have developed the application in cloud (V16.3) and trying to import the application in On-premise(V16.1). Before inspecting the application in V16.1, we have changed the appian version in the application zip file MANIFEST.MF file from 16.3.0.0 to 16.1.0.0. Earlier we used to do the similar approach to change the version from 16.2 to 16.1, that time, we were able to import the application without any issues. Did anyone ...

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0 Eduardo Fuentes
Appian Employee
over 7 years ago

That has never been a supported approach. You cannot import a model from a newer version into an older version.

The trick you described only worked because the structure of the XML for a process model was the same for the previous versions you were trying with but since that has never been a supported nor documented approach you cannot expect that work on 16.3 too.

As the product evolves the structure of its internal representation of objects can change so you cannot guarantee this trick would always work.
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0 Eduardo Fuentes
Appian Employee
over 7 years ago

That has never been a supported approach. You cannot import a model from a newer version into an older version.

The trick you described only worked because the structure of the XML for a process model was the same for the previous versions you were trying with but since that has never been a supported nor documented approach you cannot expect that work on 16.3 too.

As the product evolves the structure of its internal representation of objects can change so you cannot guarantee this trick would always work.
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