Severity Revert · Sui Framework (0x2)

0x2::dynamic_field::EFieldAlreadyExists (Abort 0)

Q: How do I fix '0x2::dynamic_field::EFieldAlreadyExists (Abort 0)'?

To resolve this error: Check if field exists using dynamic_field::exists_; mutate existing value instead of adding. Use dynamic_object_field::borrow_mut if modifying existing child object.

0x2::dynamic_field::EFieldAlreadyExists(abort 0)

Why Did This Transaction Revert?

Calling dynamic_field::add with a name/key struct that already exists on the parent object.

Smart Contract Revert Point

assert!(!dynamic_field::exists_(&parent.id, name), EFieldAlreadyExists);

💧 Native Sui Move Code & Fix

Move 2024

if (!dynamic_field::exists_(&parent.id, key)) {
    dynamic_field::add(&mut parent.id, key, val);
} else {
    let v = dynamic_field::borrow_mut(&mut parent.id, key);
    *v = val;
};

Step-by-Step Resolution Checklist

Check if field exists using dynamic_field::exists_; mutate existing value instead of adding.

Use dynamic_object_field::borrow_mut if modifying existing child object.

Diagnostic Actions

Target Chain:

Recommended Gas Limit: units

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Other Common EVM Reverts

· Move Execution Revert / Error(string) · Move Execution Abort · Insufficient Gas Balance · Gas Budget Too Low · Object ID Not Found · Object Version Mismatch / Congestion · Move Package Not Found · Type Argument Mismatch · Cryptographic Signature Invalid · 0x2::coin::ENotEnoughBalance · 0x2::coin::EGlobalCoinDoesNotExist · 0x2::dynamic_field::EFieldDoesNotExist · 0x2::dynamic_field::EFieldAlreadyExists · 0x2::kiosk::ELocked · 0x2::kiosk::ENotOwner · 0x2::kiosk::EItemNotFound · 0x2::table::EKeyNotFound · 0x2::table::EKeyAlreadyExists · 0x2::balance::EOverflow · 0x2::balance::ENotEnough · 0x2::transfer::ESharedObjectAlreadyExists · 0x2::transfer_policy::ERuleNotSatisfied · 0x2::package::EUpgradeBadVersion · 0x2::package::EUpgradeImmutable · Bytecode Verification Failure · Module Link Failure · VM Verification Error · Authorization Failure · Insufficient Coin Balance · DEX Slippage Exceeded · Object or Record Already Exists · Invalid Protocol State · Zero Amount Invalid · Transaction Expired · Liquidity Pool Locked · Arithmetic Overflow · Arithmetic Underflow · Sui Kiosk Asset Locked · Borrow Limit Exceeded · Account At Liquidation Risk · Staking Pool Inactive · Unstake Timelocked · Transfer Policy Unmet · DeepBook Order Limit Unfilled · Storage Rebate Calculation Failure · Dynamic Field Already Exists · Dynamic Field Not Found · Capability Already Consumed · Shared Object Congestion · Object Version Too Old · One-Time Witness Invalid · Gas Budget Exhausted During PTB · Epoch Transition In Progress · zkLogin Ephemeral Key Expired