Upgrading Data Type of Active Processes

RE: Upgrading Data Type of Active Processes

phanthomas27 — Mon, 27 Jan 2020 08:31:17 GMT

I had a similar issue with changed data types and running processes with reference parameters.
The way I solved it, was to edit the running processs and adding a cast on calling the subprocess with the existing reference parameter of old type.

RE: Upgrading Data Type of Active Processes

Poorna Guduri — Mon, 13 Nov 2017 22:14:30 GMT

Thanks for the Update :)

RE: Upgrading Data Type of Active Processes

aksharc — Mon, 13 Nov 2017 08:41:25 GMT

Hi Poorna. Unfortunately, the smart service didn't work the way we want. Main issue we had was, in the sub processes in the main process were getting parameters by reference. So, we couldn't effectively use the smart service. Therefore we ended up creating a new data type and keeping the old one as is.

RE: Upgrading Data Type of Active Processes

Poorna Guduri — Mon, 13 Nov 2017 00:20:18 GMT

Hi Akshar, were you able to make it using the - Upgrade Processes - Smart Service??

We are kind of having similar situation and I am little curious about the smart service behavior.

RE: Upgrading Data Type of Active Processes

aksharc — Tue, 22 Aug 2017 14:53:03 GMT

Thank you all for the responses. I guess I have to use either Process Management plug in as mentioned by Eliot or use IFM Plug-in.

RE: Upgrading Data Type of Active Processes

Eliot Gerson — Wed, 16 Aug 2017 14:52:58 GMT

It might help to take a look at the "Process Management Services" shared component, which includes utilities for upgrading active process instances forum.appian.com/.../summary

RE: Upgrading Data Type of Active Processes

aksharc — Wed, 16 Aug 2017 13:43:16 GMT

Thanks @enb and @shivamg for the reply. What I did was, I added few more fields to the Custom Data Type (name: DD5). Now, for older processes of process model M, when the subprocess (S) is called, the process fails there, and in the Alerts, following message show up.

"The sub-process could not be started because the input mapping contained process parameters with incorrect types."

I hope this helps.

RE: Upgrading Data Type of Active Processes

Shivam Gupta — Wed, 16 Aug 2017 05:55:25 GMT

enb is right and you can use this approach and if you want changed a process variable type in a process model. It will not be reflected to already instantiated processes until you restart the processes.

RE: Upgrading Data Type of Active Processes

enb — Tue, 15 Aug 2017 14:47:26 GMT

In order to determine which issues you might potentially be facing, it would be useful to know what kind of changes were made to the data type (deleted field, added field, renamed field, changed field type). Perhaps you could add that information? However, after experimenting with each of these scenarios in 17.2, I did not encounter any type mismatches. The data types appear to be stored as dictionaries, and when a node is executed the most recent version of the data type is used to interpret the dictionary. So as far as modifying the custom data type of an existing process all that is required is to save a new version of that data type.