i trying to deploy synapse dev to prod using publishing branch as "workspace_publish", for stage i used ARM Template Deployment and i override template parameters as prod and i passed "sql_connection_string" in secure variable 
i trying to deploy synapse dev to prod using publishing branch as "workspace_publish", for stage i used ARM Template Deployment and i override template parameters as prod and i passed "sql_connection_string" in secure variable 
Hello @BNarendra-4406,
Welcome to the Microsoft Q&A platform.
From the above screenshot it has total 8 errors which cause the deployment to failed. I would suggest you kindly debug all the error messages and fix and then redeploy.
Meanwhile, you can checkout the below links which describes on continuous integration and delivery for Azure Synapse workspace.
Hello @BNarendra-4406,
Following up to see if the above suggestion was helpful. And, if you have any further query do let us know.
5 people are following this question.