# Repeating the transformation

If your transformation produced invalid records, you may need to return to the original dataset and edit the mapping. Go back to your *Workspace* and select the dataset and then click on mappings.

![Editing a recent mapping](/files/-MAjghB7Bjm_o-zzrcsK)

Select the mapping that you need to edit from the list of *Recent mappings* and the mapping editor will open. Make any changes and preview the results as before. When you have finished making changes, close the mapping editor and return to the *Dataset options*. Select *Transform* and run the process again.


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# Agent Instructions: 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:

```
GET https://carare.gitbook.io/mint-mapping-service/transforming-and-publishing-your-dataset/repeating-the-transformation.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.