
For example there are 2 Contacts in the CRM, Arun has city Kolkata and Asmi has city Pune then Arun's flag should be set to - Yes and Asmi's - No.
Suggestion - you can develop your logic first in console application C# for easy debugging and then convert this to a custom workflow.
Hi, Shweta
I’d like to suggest creating an On-demand Workflow and using the Bulk Workflow Execution Tool to achieve your needs.
Set the condition. For the option set cannot be set as the condition, separate the options in the condition with semicolons in the following figure.
If this helped you, I'd appreciate it if you'd mark this as a Verified Answer, which may in turn help others as well.
Best Regards,
Nya