Apigee deployment failing with error "Conflicting Deployment"

Apigee proxy deployments upto version 10 are done from gcp console. Now, the Azure CI/CD pipelines are developed to deploy the revisions 11 onwards, however, the terraform deployments through this azure pipeline are failing with the following error

Error: Error creating ApiDeployment: googleapi: Error 400: generic :: failed_precondition: deployment validation details:
[

“violations”:[

{

description: “Only one revision can be deployed at a time, use the override flag to replace”

type: “Conflicting_Deployment”

}

]

Please advise