# DEFAULT_GRPC_CALLBACK_METADATA

**Kind:** Constant

**Source:** [`packages/microservices/context/rpc-metadata-constants.ts`](https://github.com/nestjs/nest/blob/master/packages/microservices/context/rpc-metadata-constants.ts#L6)

**Part of:** [Microservices](subsystem-packages-microservices)

## Definition

```ts
{
  [`${RpcParamtype.CONTEXT}:1`]: { index: 1, data: undefined, pipes: [] },
  [`${RpcParamtype.GRPC_CALL}:2`]: { index: 2, data: undefined, pipes: [] },
  ...DEFAULT_CALLBACK_METADATA,
}
```

## Value

```ts
{
  [`${RpcParamtype.CONTEXT}:1`]: { index: 1, data: undefined, pipes: [] },
  [`${RpcParamtype.GRPC_CALL}:2`]: { index: 2, data: undefined, pipes: [] },
  ...DEFAULT_CALLBACK_METADATA,
}
```