Script written inflow designer not working in TEST whereas working fine in DEV and PROD

[SaiUpeshJ]

The code which has been written in the  flow designer is not working in Test environment but is working in dev and Prod environment. What could be the issue? Any suggestion on that.

[Mark Manders]

We can't suggest much, since you shared absolutely nothing. You didn't share the script, you didn't share the flow, you didn't share the results from the flow executions.

So let me answer your question 'what could be the issue': your flow testing on the test instance didn't meet the conditions, hence wasn't fired and the script didn't do a thing.
I can give you hundreds of similar answers that don't help you, because I have to guess everything about your question.

[Tanushree Maiti]

Hi @SaiUpeshJ 

•  Open Flow Designer directly in the Test environment and look at the top right header. Ensure that the flow status reads Active. If it says Draft, click Publish
• Look at the Update Set Preview Errors in Test to see if anything was skipped. If needed, re-capture the flow or actions in a new update set from Dev by making a minor cosmetic change and migrating it again
• If your main flow references a subflow or a custom Action, and that action wasn't included in the update set or failed to commit, the main flow will error out with "Action not found"
• Refer: "Your flow cannot be found. Flow sys_id:An" error 
• Does your flow filter by a specific User, Assignment Group, or CI? If that record does not exist in Test—or exists but has a different sys_id, the condition will fail silently or crash
•