MultiversX Payment Handling — self.call_value() API Reference

Complete reference for receiving and validating payments in MultiversX smart contracts (SDK v0.64+).

Payment Type Hierarchy

Payment<M>              ← v0.64+ preferred, uses NonZeroBigUint (amount guaranteed > 0)
├── token_identifier: TokenId<M>           (unified: EGLD + ESDT)
├── token_nonce: u64
└── amount: NonZeroBigUint<M>

EsdtTokenPayment<M>     ← ESDT-only (no EGLD), BigUint amount (can be 0 in theory)
├── token_identifier: EsdtTokenIdentifier<M>
├── token_nonce: u64
└── amount: BigUint<M>