> For the complete documentation index, see [llms.txt](https://docs.intrepidcs.com/vspy-3-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.intrepidcs.com/vspy-3-documentation/3.9.11/vehicle-spy-tutorials/tutorial-sort-messages-by-ecu/part-2-enter-ecu-source-ids-to-sort.md).

# Part 2 - Enter ECU Source IDs to Sort

### 1. Enter Source IDs in Receive Messages:

First, we need to enter ECU source ID information so the filtering can take place. In ![](https://cdn.intrepidcs.net/support/VehicleSpy/assets/spyExMsgSig.gif) Messages Editor enter a description and source ID for each ECU you wish to record. The ECU source IDs in our example file are: 60, 40, 29, 1A, 58, 10, and 97. Use the ECU ID followed by "ECU" for the description.  Your Messages Editor spreadsheet should look like Figure 1.\
\
\*\*Hint: Notice the Receive table is enabled and J1850 VPW is selected in the Network dropdown.

![Figure 1: Enter ECU source IDs on the Messages Editor spreadsheet.](https://2673726158-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdYdvinhoJh0IN6rV8uo3%2Fuploads%2Fw76PBvXNsOkAoBIAiRv3%2FspyExample4Part2Pic1.jpeg?alt=media\&token=d050bc36-1212-4f0e-aaf9-67478c855c20)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.intrepidcs.com/vspy-3-documentation/3.9.11/vehicle-spy-tutorials/tutorial-sort-messages-by-ecu/part-2-enter-ecu-source-ids-to-sort.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.