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Hedera Protobuf Java API
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syntax = "proto3";

package proto;

/*-
 * ‌
 * Hedera Network Services Protobuf
 * 
 * Copyright (C) 2018 - 2021 Hedera Hashgraph, LLC
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ‍
 */

option java_package = "com.hederahashgraph.api.proto.java";
// <<>> This comment is special code for setting PBJ Compiler java package
option java_multiple_files = true;

import "basic_types.proto";

/**
 * Burns tokens from the Token's treasury Account. If no Supply Key is defined, the transaction will
 * resolve to TOKEN_HAS_NO_SUPPLY_KEY.
 * The operation decreases the Total Supply of the Token. Total supply cannot go below zero.
 * The amount provided must be in the lowest denomination possible. Example:
 * Token A has 2 decimals. In order to burn 100 tokens, one must provide amount of 10000. In order
 * to burn 100.55 tokens, one must provide amount of 10055.
 * For non fungible tokens the transaction body accepts serialNumbers list of integers as a parameter.
 * 
 * If the serialNumbers don't get filled for non-fungible token type, a INVALID_TOKEN_BURN_AMOUNT response
 * code will be returned.
 * If a zero amount is provided for a fungible token type, it will be treated as a regular transaction.
 * If both amount and serialNumbers get filled, a INVALID_TRANSACTION_BODY response code will be
 * returned.
 * If the serialNumbers' list count is greater than the batch size limit global dynamic property, a
 * BATCH_SIZE_LIMIT_EXCEEDED response code will be returned.
 * If the serialNumbers list contains a non-positive integer as a serial number, a INVALID_NFT_ID
 * response code will be returned.
 */
message TokenBurnTransactionBody {
    /**
     * The token for which to burn tokens. If token does not exist, transaction results in
     * INVALID_TOKEN_ID
     */
    TokenID token = 1;

    /**
     * Applicable to tokens of type FUNGIBLE_COMMON. The amount to burn from the Treasury Account.
     * Amount must be a positive non-zero number, not bigger than the token balance of the treasury
     * account (0; balance], represented in the lowest denomination.
     */
    uint64 amount = 2;

    /**
     * Applicable to tokens of type NON_FUNGIBLE_UNIQUE. The list of serial numbers to be burned.
     */
    repeated int64 serialNumbers = 3;
}