+| Queue or topic size |Entity | <p>1, 2, 3, 4 GB or 5 GB</p><p>In the Premium SKU, and the Standard SKU with [partitioning](../articles/service-bus-messaging/service-bus-partitioning.md) enabled, the maximum queue or topic size is 80 GB.</p><p>Total size limit for a premium namespace is 1 TB per [messaging unit](../articles/service-bus-messaging/service-bus-premium-messaging.md). Total size of all entities in a namespace can't exceed this limit.</p> | Defined upon creation/updation of the queue or topic. <br/><br/> Subsequent incoming messages are rejected, and an exception is received by the calling code. <p>Currently, a large message sent to a queue is counted twice. And, a large message sent to a topic is counted X + 1 times, where X is the number of subscriptions to the topic. </p>|
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