Error Handling inside Internet Computer

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SubnetOverSubscribed: StatusCode 101

This error is raised when installing a new canister or increasing memory allocation in the canister, and no compute allocation or memory capacity is left in the subnet.

MaxNumberOfCanistersReached: StatusCode 102

There is an option in the NNS registry to set a max limit on the number of canisters in a subnet. When a new canister is created, the subnet checks if this maximum limit is reached and throws an error accordingly. Currently, we don’t limit the number of canisters in a subnet.

CanisterOutputQueueFull: StatusCode 201

Internet Computer allows one canister to call another canister. These outgoing inter-canister canister calls are placed in the output queues of the canister. There is a currently a limit of 500 messages per output queue. CanisterOutputQueueFull error is thrown when this limit is reached.

IngressMessageTimeout: StatusCode 202

Timeout is 5 minutes. This can happen if the system is quite loaded.