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Common issues and solutions when integrating with Custom Stablecoins swaps.

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Common Errors

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AccountNotInitialized

Error: user_from_token_account - Account not initializedSolution: You need USDC tokens in your wallet. Get devnet USDC from CDP Faucet.
The example code includes logic to auto-create the destination token account if needed (needsAccountCreation). However, you must have the input token (USDC) before swapping.

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Insufficient lamports

Error: insufficient lamports or insufficient funds for rentSolution: You need more SOL for transaction fees and rent. Get at least 0.05 SOL from CDP Faucet.

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InsufficientLiquidity

Error: Not enough reserves in the output vaultSolution: Reduce swap amount or wait for liquidity to be added.

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SlippageExceeded

Error: Output is less than min_amount_outSolution: Increase slippage tolerance or re-fetch current fee rate.

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NotWhitelisted

Error: Transaction signer is not on the whitelistSolution: Contact support to be added to the whitelist.

Production Readiness

Helper functions for validation

Examples

More swap code examples

Reference

Swap instruction parameters

Quickstart

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