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This article explains the common error codes and HTTP status codes you may encounter when using the Cobo WaaS 2.0 API and how to resolve the errors.

Error codes

General errors

Pricing plan errors

Wallet configuration errors

Transfer errors

The following error codes are returned by transfer and withdrawal operations.

Token and balance errors

Transaction management errors

MPC wallet errors

Smart contract and EVM errors

The following error codes are returned by smart contract wallet and EVM contract call operations. Note: Error codes 40001–40003 are also returned by transaction category operations with different meanings. Use the operation you called and the error_message to determine which meaning applies.

MFA errors

The following error codes are returned when Cobo Guard multi-factor authentication (MFA) is required or fails.

Transaction category errors

The following error codes are returned by transaction category management operations. Note: Error codes 40001–40003 are also returned by EVM operations with different meanings. Use the operation you called and the error_message to determine which meaning applies.

Compliance and KYT errors

The following error codes are returned by compliance and Know Your Transaction (KYT) operations.

Travel Rule errors

The following error codes are returned by Travel Rule compliance operations.

HTTP status codes