XtremIO: How to solve error "obj_identifier_not_unique"

When attempting to create a snapshot, the XMS may give an error code stating "obj_identifier_not_unique." An example of this is shown below:
 

An object being created was trying to use the same identifier as an object that exists, such as an index number or name.

The example that is provided above shows a snapshot being created for a consistency group. In this example, review of the objects on the XMS discovered that the snapshot being created was attempting to create a snapshot that would have the same name as another snapshot existing on the array.

To verify if this is due to a volume name already in use, perform the following:

1. Record the names of the volumes in the Consistency Group or Snapshot Set you are creating a snapshot from.
2. Take note of the snapshot suffix name, as custom suffix names tend to lead into this issue.
3. Log in to the array using XMCLI, run show-volumes, and copy the output to a text document. Search for the names of the volumes from the CG or SS you are creating a snapshot for.

4. Review the search results. If applying the intended suffix to any volumes in the CG or SS would create a snapshot that matches another volume or snapshot that is present on the array, this is the cause (or one of the causes) of the error occurring.

Also, another method of verifying would be to change the snapshot suffix that would be applied to something that would not be present on the array.

To resolve, there are two options:

1. The simplest option is to choose a different suffix that is not used anywhere else on the cluster. This can also be a quick way of determining the issue is present.
2. If the volume name causing the issue have been identified, rename either the volume the snapshot would be created from, or the other volume or snapshot that exists on the array to a different name.

If no volumes have been identified as leading to creating a duplicate name, contact Dell EMC Global Technical Support and reference this KB as well as provide details on the operation that is performed and the error. For XMCLI, the full command should be provided. For UI, provide the name of the CG or SS, and the suffix. 

When attempting to perform this operation in the UI, some versions of the UI may give the message "Suffix creates existing names on CLUSTER_NAME" when attempting to set the suffix to a name that would create duplicate names.

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