Adding of worker node failed azure using ARM template with an error: "The resource operation completed with terminal provisioning state 'Failed'".

Issue

• Adding of worker node via ARM template with an error:

{"status":"Failed","error":{"code":"DeploymentFailed","message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-deployment-operations for usage details.","details":[{"code":"Conflict","message":"{\r\n  \"status\": \"Failed\",\r\n  \"error\": {\r\n    \"code\": \"ResourceDeploymentFailure\",\r\n    \"message\": \"The resource operation completed with terminal provisioning state 'Failed'.\",\r\n    \"details\": [\r\n      {\r\n        \"code\": \"DeploymentFailed\",\r\n        \"message\": \"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-deployment-operations for usage details.\",\r\n        \"details\": [\r\n          {\r\n            \"code\": \"Conflict\",\r\n            \"message\": \"{\\r\\n  \\\"error\\\": {\\r\\n    \\\"code\\\": \\\"ConflictingUserInput\\\",\\r\\n    \\\"message\\\": \\\"Disk test-14h-xrz8n-worker-centralindia-1_OSDisk already exists in resource group TEST-14H-XRZ8N-RG. Only CreateOption.Attach is supported.\\\",\\r\\n    \\\"target\\\": \\\"/subscriptions/exxx-exxx-4xa8xx3-3xxxxe412/resourceGroups/test-14h-xrz8n-rg/providers/Microsoft.Compute/disks/test-14h-xrz8n-worker-centralindia-1_OSDisk\\\"\\r\\n  }\\r\\n}\"\r\n          }\r\n        ]\r\n      }\r\n    ]\r\n  }\r\n}"},{"code":"Conflict","message":"{\r\n  \"status\": \"Failed\",\r\n  \"error\": {\r\n    \"code\": \"ResourceDeploymentFailure\",\r\n    \"message\": \"The resource operation completed with terminal provisioning state 'Failed'.\",\r\n    \"details\": [\r\n      {\r\n        \"code\": \"DeploymentFailed\",\r\n        \"message\": \"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-deployment-operations for usage details.\",\r\n        \"details\": [\r\n          {\r\n            \"code\": \"Conflict\",\r\n            \"message\": \"{\\r\\n  \\\"error\\\": {\\r\\n    \\\"code\\\": \\\"ConflictingUserInput\\\",\\r\\n    \\\"message\\\": \\\"Disk test-14h-xrz8n-worker-centralindia-3_OSDisk already exists in resource group TEST-14H-XRZ8N-RG. Only CreateOption.Attach is supported.\\\",\\r\\n    \\\"target\\\": \\\"/subscriptions/exxx-exxx-xxx4-a823-345c01e9e412/resourceGroups/test-14h-xrz8n-rg/providers/Microsoft.Compute/disks/test-14h-xrz8n-worker-centralindia-3_OSDisk\\\"\\r\\n  }\\r\\n}\"\r\n          }\r\n        ]\r\n      }\r\n    ]\r\n  }\r\n}"},{"code":"Conflict","message":"{\r\n  \"status\": \"Failed\",\r\n  \"error\": {\r\n    \"code\": \"ResourceDeploymentFailure\",\r\n    \"message\": \"The resource operation completed with terminal provisioning state 'Failed'.\",\r\n    \"details\": [\r\n      {\r\n        \"code\": \"DeploymentFailed\",\r\n        \"message\": \"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-deployment-operations for usage details.\",\r\n        \"details\": [\r\n          {\r\n            \"code\": \"Conflict\",\r\n            \"message\": \"{\\r\\n  \\\"error\\\": {\\r\\n    \\\"code\\\": \\\"ConflictingUserInput\\\",\\r\\n    \\\"message\\\": \\\"Disk test-14h-xrz8n-worker-centralindia-2_OSDisk already exists in resource group TEST-14HXRZ8N-RG. Only CreateOption.Attach is supported.\\\",\\r\\n    \\\"target\\\": \\\"/subscriptions/exxxx-exxx-xxx-axxx-345c01e9e412/resourceGroups/test-14h-xrz8n-rg/providers/Microsoft.Compute/diskstest-14h-xrz8n-worker-centralindia-2_OSDisk\\\"\\r\\n  }\\r\\n}\"\r\n          }\r\n        ]\r\n      }\r\n    ]\r\n  }\r\n}"}]}}