> ## Documentation Index > Fetch the complete documentation index at: https://docs.meteora.ag/llms.txt > Use this file to discover all available pages before exploring further. # Dynamic Fee Sharing Program Errors > Understand Dynamic Fee Sharing custom errors, codes, messages, and common causes for integration debugging. Dynamic Fee Sharing custom errors are emitted by the Anchor `FeeVaultError` enum. Anchor custom error codes start at `6000`. When a transaction log contains a custom program error such as `0x1776`, convert the hex value to decimal to find the matching code. `0x1776` is `6006`, which maps to `ExceededUser`. ## Error Codes | Code | Name | Message | Common cause | | - | - | - | - | | `6000` | `MathOverflow` | Math operation overflow | Checked arithmetic failed during funding, fee-per-share calculation, claim calculation, or Token 2022 transfer-fee calculation. | | `6001` | `InvalidMint` | Mint is not supported | Token 2022 mint has an unsupported extension, or mint account validation failed. | | `6002` | `InvalidFeeVaultParameters` | Fee vault parameters are invalid | A configured user share is zero. | | `6003` | `AmountIsZero` | Amount is zero | Direct funding resolved to zero after capping by the funder's token account balance. | | `6004` | `InvalidUserIndex` | Invalid user index | `claim_fee` was called with an index outside the fixed user array. | | `6005` | `InvalidUserAddress` | Invalid user address | Initialization used a default public key, or `claim_fee` signer did not match `users[index].address`. | | `6006` | `ExceededUser` | Exceeded number of users allowed | Initialization used fewer than 2 users or more than 5 users. | | `6007` | `InvalidFeeVault` | Invalid fee vault | `fund_by_claiming_fee` was called with a non-PDA fee vault. | | `6008` | `InvalidSigner` | Invalid signer | Source-program funding signer is not one of the fee vault shareholders. | | `6009` | `InvalidAction` | Invalid action | Source program, instruction discriminator, or expected token vault remaining account does not match the whitelist. | This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.