> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zeotap.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Understand the Basic Fields

| **Field Name**       | **Description**                                                                                                                                                                                                                                                              |
| :------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Source Field Name    | This is the list of source fields that is mapped to a catalogue field, coming from different sources defined in your Zeotap Organisation.This is the name of the field that you bring as a data point from your source through a file or from any of your streaming sources. |
| Catalogue Field Name | This is the list of fields available in your Zeotap catalogue for mapping                                                                                                                                                                                                    |
| Mapped Sources       | This is the list of sources in which the particular catalogue field and sourcefields are mapped.                                                                                                                                                                             |
| Category             | This indicates the category of your field and can have the following values. To know more about each category, refer to [Knowing the Category Fields](/articles/unify-customer/add-a-catalogue-field).                                                                       |
| Data Type            | This indicates the data type of the value that will be stored in this field.**Note**: An incorrect data type may lead to an ingestion failure.                                                                                                                               |
| Raw PII              | When set to Yes, this field contains sensitive PII information of the user. **Note**: All the PII flagged field are additionally encrypted and are not available for data filtering or viewing across the Zeotap UI.                                                         |