Deprecated Objects: 17.2 to 17.4 upgrade

Question

We are in the process of upgrading our application from version 17.2 to version 17.4. 
 How do I find the deprecated objects in the current version of the application and replace them with the corresponding ones in 17.4. 
 In other words, is there a way to find all the deprecated objects in 17.2 version and replace them with the corresponding ones in 17.4 version, so that the application code does not break after the upgrade is complete. 
 Any help is greatly appreciated.

Robert Shankin · Accepted Answer

Hi Aijaz - 
 
 Appian product releases are backwards compatible except where explicit notice of deprecation is given.
 
 Thus, it's not a requirement to revise your code in preparation for the upgrade.

Deprecation information can be found in the release notes 
 
 17.3 deprecations 
 17.4 doesn't site deprecations but does note evolved functions .

Just to add some more detail on Harrison's answer:
 
 Search within expressions was added in 17.3. See the docs here . Since it's not available in 17.2, you won't be able to use it until after you upgrade . 
 You may choose to search for evolved functions after you upgrade if you wish. 
 
 again, it's not mandatory to update functions to the evolved versions right now. 
 note, too: you would be effectively updating you application to use NEW functions. 
 
 Some evolved functions take different parameters. 
 I recommend you do not rush into changing these functions without planning. 
 This would be no different than other functional changes to your application, a regression test would be wise.

Finally, do you have an upgrade server?
 
 Not all customers do have an upgrade server, but one of these can be an asset.
 
 An upgrade server is very similar to QA in that it matches prod, except the plan for this server is to test all Appian product upgrades on this server first.
 
 Upgrade this machine well in advance of the prod upgrade 
 Run any available test scripts of your Appian applications on the upgrade server 
 Invite product owners and application design teams to test their applications on this server 
 Appian releases are backwards compatible, and you should not experience service impacting issues with the upgrade. However behavior changes are possible. It can be beneficial to understand behavior changes prior to upgrading production. 
 In the unlikely event that you do observe an issue with the upgrade, this can be communicated to Appian support, and can likely be resolved prior to you scheduled production upgrade.

Good luck with the upgrade!