# converttopsbt - Bitcoin SV

#### Parameters

`hexstring` - string, required

The hex string of a raw transaction

`permitsigdata` - boolean, optional, default=false

If true, any signatures in the input will be discarded and conversion will continue. If false, RPC will fail if any signatures are present.

`iswitness` - boolean, optional, default=depends on heuristic tests

Whether the transaction hex is a serialized witness transaction.

#### Request

```java
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \ 
--data-raw '{"jsonrpc": "2.0",
"method": "converttopsbt",
"params": ["rawtransaction", null, null],
"id": "getblock.io"}'
```

#### Response

```java
null
```