ScriptResult

pub struct ScriptResult {
    pub result: u64,
    pub gas_used: u64,
}

• A ScriptResult receipt is generated when a contract call resolves; that is, it's generated as a result of the RET, RETD, and RVRT instructions.
• The result field will contain a 0 for success, and a non-zero value otherwise.
• Read more about ScriptResult in the Fuel protocol ABI spec

You can handle functions that produce a ScriptResult receipt type by adding a parameter with the type abi::ScriptResult.

fn handle_script_result(script_result: abi::ScriptResult) {
  // handle the script result
}