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Subscribed libraries might fail to sync changes on an itemMessages similar to the following might be seen in /var/log/vmware/content-library/cls.log. error = TransferError (com.vmware.transfer.transfer_error) => { message = Reached the maximum number of retries (10) while attempting to transfer from com.vmware.transfer.impl.HttpClientEndpointImpl@c5f0374. Failing transfer.,2022-12-24T23:59:59.512Z | ERROR | abcdefg-23436551-auto-dcba-h5:73829-83-74-d8 | cls-simple-activity-3 | SimpleActivityWorker | Exception will not be handled by activity UpdateLibraryItemActivity (handle=35780f2-c13d-4569-a338-31575fe9664, entityId=8241a0f2-ad8b-4aba-b235-38ca5fe8e5): AlreadyExists (com.vmware.vapi.std.errors.already_exists) => { messages = [LocalizableMessage (com.vmware.vapi.std.localizable_message) => { id = com.vmware.vdcs.cls-main.duplicate_item_name_unsupported_in_library, defaultMessage = Operation is not supported since a library item with the name xdt_isp exists in the library 'TestSubscriber' (ID: 8241a0f2-ad8b-4aba-b235-38ca5fe8e5)., args = [xdt_isp, CLS-Subscriber-library, 8241a0f2-ad8b-4aba-b235-38ca5fe8e5], params = <null>, localized = <null>}], data = <null>, errorType = ALREADY_EXISTS} Important Note: The error "Reached the maximum number of retries (10)" is also seen in cls.log when the concurrent transfer limit is reached for long enough to cause a library item file to timeout. This is not the same scenario as what is described in this article.
When several changes are made on content library items, and subscribing libraries pull these changes down via a sync operation, they can be prioritized and executed in the wrong order on the subscribed vCenter, leading to a conflict. For example, if an item is renamed and then deleted, the subscriber side might receive these out of order and attempt to delete it before renaming it, leading to a sync failure.
VMware is aware of this issue and working towards a resolution.
You can work around this issue by issuing a manual sync on an item before making any further changes that might conflict if read out of order.
Depending on the tasks that are taken on the Content Library Items, there are other ways this may surface, which may result in differing log entries than stated in the symptoms section.
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