I cannt save the process model. This always says.. "The Process Model is invalid."

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

Thenmozhi Mohanakrishnan — Wed, 14 Oct 2020 10:08:30 GMT

I encountered this error while simultaneously logging with basic user for some testing and forgot to log back with my designer credential in another tab. When I logged in with designer credentials, I was able to save and publish the process model.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

RajHasti — Tue, 11 Jun 2019 16:17:30 GMT

Yes i do see this behavior most of times with copy nodes from one process model to other or from older version.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

Mike Schmitt — Tue, 11 Jun 2019 15:23:16 GMT

[quote userid="2478" url="~/discussions/f/process/14989/i-cannt-save-the-process-model-this-always-says-the-process-model-is-invalid/67020"]Also before you do this, I'd recommend copying all the nodes to another process (it can be an empty one), because then you can copy any nodes back[/quote]

There's a small but severe caveat to this - if any node has an output expression that takes up multiple lines (i.e. has any linebreaks at all), and it's copied into a process model where that expression's output PV doesn't exist, everything after the first line of the expression will be cleared upon pasting. This is an issue that I'd be happy if Appian fixed, though I have no reasonable expectation of that happening anytime soon, as it's been around for years as far as I've seen.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

Stewart Burchell — Tue, 11 Jun 2019 15:10:39 GMT

If you have extensive script embedded in your Script Tasks you can mitigate this by encapsulating in a rule and calling that (it doesn't remove the risk but it does reduce it dramatically). It's also best practice because you can test your script independently of the process where you use it.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

Pablo Ramos Clemente — Tue, 11 Jun 2019 13:50:57 GMT

I found the script that was giving problems, deleting node to node. I removed a node and tried to save, until it worked. After this, I created the script again. Thanks for your help! And for your appian video tutorials, I started learning appian with them!

Best regards!

Pablo Ramos.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

Peter Lewis — Tue, 04 Jun 2019 14:33:34 GMT

Can you try to keep deleting nodes and attempt to save again each time you delete one? There is likely something in one of the nodes - I've mostly seen it with a reference to a process variable or activity class parameter that has been deleted. Eventually, you should delete one node that will then allow you to save it.

Also before you do this, I'd recommend copying all the nodes to another process (it can be an empty one), because then you can copy any nodes back after making your changes.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

amanit0001 — Tue, 04 Jun 2019 09:53:01 GMT

This could happen if there are deleted process variables still getting used somewhere in the process. So please check the nodes in detail.

RE: I cannt save the process model. This always says.. "The Process Model is invalid."

paulc919 — Tue, 04 Jun 2019 09:30:09 GMT

I've had this before. From memory I think one of the expression rules I was calling had an extra comma in that although the expression editor didn't complain about was being picked up in the process model - so might be worth checking expression rules again.