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

# Relations

> Map suppliers to default GL, VAT, and auto-processing behavior.

## Overview

Relations connect suppliers to the GL and VAT logic used during invoice processing. When a supplier relation is linked to a description, Glimps uses the mapped GL and VAT codes to automatically code invoice lines based on those descriptions.

## How it works

* Descriptions define the GL and VAT codes you want to apply for common line items.
* Relations assign those descriptions to specific suppliers so the right codes are applied automatically.
* The system learns from manual corrections and adjusts future suggestions for the same supplier and line patterns.

## Configure relation mappings

Review supplier relations and update GL, VAT, or processing defaults to align with how each supplier should be handled.

<Tip>
  Review relations periodically to keep automation aligned with supplier changes.
</Tip>