Azure Event Hubs - Resource Manager exceptions

This article lists exceptions generated when interacting with Azure Event Hubs using Azure Resource Manager - via templates or direct calls.

Important

This document is frequently updated. Please check back for updates.

The following sections provide various exceptions/errors that are surfaced through Azure Resource Manager.

Error code: Conflict

Error code	Error subcode	Error message	Description	Recommendation
Conflict	40300	The maximum number of resources of type EventHub has been reached or exceeded. Actual: #, Max allowed: #	The namespace has reached its quota for the number of Event Hubs it can contain.	Delete any unused or extraneous event hubs from the namespace or consider upgrading to a dedicated cluster.
Conflict	none	Disaster recovery (DR) config can't be deleted because replication is in progress. Fail over or break pairing before attempting to delete the DR Config.	GeoDR replication is in progress, so the config can't be deleted at this time.	To unblock deletion of the config, either wait until replication has completed, trigger a failover, or break the GeoDR pairing.
Conflict	none	Namespace update failed with conflict in backend.	Another operation is currently being done on this namespace.	Wait until the current operation completes, and then retry.

Error code: 429

Error code	Error subcode	Error message	Description	Recommendation
429	none	Namespace provisioning in transition	Another operation is currently being done on this namespace.	Wait until the current operation completes, and then retry.
429	none	Disaster recovery operation in progress.	A GeoDR operation is currently being done on this namespace or pairing.	Wait until the current GeoDR operation completes, and then retry.

Error code: BadRequest

Error code	Error subcode	Error message	Description	Recommendation
BadRequest	40000	PartitionCount can't be changed for an event hub.	Basic, standard, or premium tier of Azure Event Hubs doesn't support changing partitions.	Create a new event hub with the wanted number of partitions in your basic, standard, or premium tier namespace. Partition scale-out is supported for dedicated clusters.
BadRequest	40000	The value '#' for MessageRetentionInDays isn't valid for the Basic tier. the value can't exceed '1' day(s).	Basic tier Event Hubs namespaces only support message retention of up to 1 day.	If more than one day of message retention is wanted, create a standard Event Hubs namespace.
BadRequest	40000	The event hub can't be disabled.	The Capture feature is enabled for continuous flow of messages.	Disable the Capture feature and then try disabling the event hub.
BadRequest	none	The specified name isn't available.	Namespace names must be unique, and the specified name is already taken.	If you're the owner of the existing namespace with the specified name, you can delete it, which will cause data loss. Then, try again with the same name. If the namespace isn't safe to delete (or you aren't the owner), choose another namespace name.
BadRequest	none	The specified subscription has reached its quota of namespaces.	Your subscription has reached the quota for the number of namespaces it can hold.	Consider deleting unused namespaces in this subscription, creating another subscription, or upgrading to a dedicated cluster.
BadRequest	none	Can't update a namespace that is secondary	The namespace can't be updated because it's the secondary namespace in a GeoDR pairing.	If appropriate, make the change to the primary namespace in this pairing instead. Otherwise break the GeoDR pairing to make the change.
BadRequest	none	Can't set Auto-Inflate in basic SKU	Auto-Inflate can't be enabled on basic tier Event Hubs namespaces.	To enable Auto Inflate on a namespace, make sure it's of standard or premium tier.
BadRequest	none	There isn't enough capacity to create the namespace. Contact your Event Hubs administrator.	The selected region is at capacity and more namespaces can't be created.	Select another region to house your namespace.
BadRequest	none	The operation can't be done on entity type 'ConsumerGroup' because the namespace 'namespace name' is using 'Basic' tier.	Basic tier Event Hubs namespaces have a quota(event-hubs-quotas.md) of one consumer group (the default). Creating more consumer groups isn't supported.	Continue using the default consumer group ($Default), or if more are needed, consider using a standard or premium tier Event Hubs namespace instead.
BadRequest	none	The namespace 'namespace name' doesn't exist.	The namespace provided couldn't be found.	Double check that the namespace name is correct and can be found in your subscription. If it isn't, create an Event Hubs namespace.
BadRequest	none	The location property of the resource doesn't match its containing Namespace.	Creating an event hub in a specific region failed because it didn't match the region of the namespace.	Try creating the event hub in the same region as the namespace.

Error code: Internal server error

Error code	Error subcode	Error message	Description	Recommendation
Internal Server Error	none	Internal Server Error.	The Event Hubs service had an internal error.	Retry the failing operation. If the operation continues to fail, contact support.