> For the complete documentation index, see [llms.txt](https://docs.trustlesswork.com/trustless-work/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trustlesswork.com/trustless-work/v1-pt/api-rest/deploy/change-milestone-flag.md).

# Aprovar marco

### **Cabeçalhos**

<table><thead><tr><th width="366">Nome</th><th>Valor</th></tr></thead><tbody><tr><td>Content-Type</td><td><code>application/json</code></td></tr><tr><td>x-api-key</td><td><code>&#x3C;token></code></td></tr></tbody></table>

### Open API

## POST /escrow/single-release/approve-milestone

>

```json
{"openapi":"3.0.0","info":{"title":"Trustless Work API","version":"1.0"},"security":[{}],"paths":{"/escrow/single-release/approve-milestone":{"post":{"operationId":"SingleReleaseController_approveMilestone","parameters":[],"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ApproveMilestone"}}}},"responses":{"201":{"description":"This endpoint returns an unsigned transaction in XDR format. This XDR is then used to sign the transaction using the “/helper/send-transaction” endpoint.","content":{"application/json":{}}},"400":{"description":"Bad request"},"401":{"description":"Unauthorized access"},"429":{"description":"Too Many Requests"},"500":{"description":"Possible errors:\n- Escrow not found\n- Only the approver can change milestone flag\n- You cannot approve a milestone that has already been approved previously\n- The milestone status cannot be empty\n- Escrow initialized without milestone\n- Invalid milestone index\n- An unexpected error occurred","content":{"application/json":{}}}},"tags":["Single Release"]}}},"components":{"schemas":{"ApproveMilestone":{"type":"object","properties":{"contractId":{"type":"string","description":"ID (address) that identifies the escrow contract"},"milestoneIndex":{"type":"string","description":"Position that identifies the milestone within the group of milestones in the escrow"},"approver":{"type":"string","description":"Address of the entity requiring the service"}},"required":["contractId","milestoneIndex","approver"]}}}}
```

<figure><img src="/files/82e1981026ba37e40bd08454e80d03ddc9d16527" alt=""><figcaption></figcaption></figure>

### **O que este Endpoint retorna?**

Este endpoint retorna a transação não assinada para que a transação possa ser assinada por meio da carteira do cliente.

### Exemplo de uso:

```typescript
import axios from "axios";

const http = axios.create({
  baseURL: "https://dev.api.trustlesswork.com",
  timeout: 10000,
  headers: {
    "Content-Type": "application/json",
    "x-api-key": sua_chave_api,
  },
});

export const useExample = async () => {
    // Obter o endereço do assinante
    const { address } = await kit.getAddress();

    const response = await http.post(
      "/escrow/liberação-única/aprovar-marco",
      {
        // corpo solicitado para o endpoint
      },
    ); 
    
    // Obter o hash da transação não assinada
    const { unsignedTransaction } = response.data;

    // Assinar a transação pela carteira
    const { signedTxXdr } = await signTransaction(unsignedTransaction, {
      address,
      networkPassphrase: WalletNetwork.TESTNET,
    });

    // Enviar a transação para a Rede Stellar
    const tx = await http.post("/helper/send-transaction", {
      signedXdr: signedTxXdr,
    });

    const { data } = tx;

    return data;
}
```


---

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