# Internal error codes for Amazon EMR
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The following sections provide troubleshooting information for internal error codes, including codes for insufficient capacity or no capacity.

**Topics**
+ [INTERNAL\_ERROR\_EC2\_INSUFFICIENT\_CAPACITY\_AZ](INTERNAL_ERROR_EC2_INSUFFICIENT_CAPACITY_AZ.md)
+ [INTERNAL\_ERROR\_SPOT\_PRICE\_INCREASE\_PRIMARY](INTERNAL_ERROR_SPOT_PRICE_INCREASE_PRIMARY.md)
+ [INTERNAL\_ERROR\_SPOT\_NO\_CAPACITY\_PRIMARY](INTERNAL_ERROR_SPOT_NO_CAPACITY_PRIMARY.md)