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

# How to setup Customer Master Data in Weclapp

> Step by step guide to configure your customer master data

### Creating Trading Partner GLNs

<Steps>
  <Step title="Open customer card">
    Open a customer's customer card and add or change addresses by clicking on the "plus" sign.

    <img src="https://mintcdn.com/procuros-c35f505c/b4Ged39gntaEJFnT/images/Masterdata-opencustomercard.jpg?fit=max&auto=format&n=b4Ged39gntaEJFnT&q=85&s=934f01a5adc1e4d56a9bcd1fc0545459" alt="Masterdata Opencustomercard Jp" width="1920" height="1080" data-path="images/Masterdata-opencustomercard.jpg" />
  </Step>

  <Step title="Check relevant fields">
    Check all boxes relevant to this address. Pay attention to different billing or delivery addresses. These must be created separately - details can be found in the official Weclapp documentation.

    <img src="https://mintcdn.com/procuros-c35f505c/B4duGMjGkBbihGWc/images/Masterdata-customerGLNandaddress.jpg?fit=max&auto=format&n=B4duGMjGkBbihGWc&q=85&s=cfe6147bb98a4ebe639b3e76c038edb4" alt="Masterdata Customer GL Nandaddress Jp" width="1920" height="1080" data-path="images/Masterdata-customerGLNandaddress.jpg" />
  </Step>

  <Step title="Enter GLN">
    Paste the GLN into the appropriate field located at the bottom.
  </Step>
</Steps>

<Warning>
  Please be careful not to include spaces or other special characters - the GLN must adhere to the GS1 standards.
</Warning>

### Creating Trading Partner Sales Tax IDs

<Steps>
  <Step title="Open customer card">
    Set up the sales tax ID / VAT ID in your customer's master data.
  </Step>

  <Step title="Enter VAT ID">
    To do this, open a corresponding customer and in the "Overview" tab scroll down to the "VAT ID number" field and enter the customer's VAT ID there.

    <img src="https://mintcdn.com/procuros-c35f505c/B4duGMjGkBbihGWc/images/CustomerMasterdata-VAT.jpg?fit=max&auto=format&n=B4duGMjGkBbihGWc&q=85&s=005d7cfb255d47f8ace17ec8ea6f5519" alt="Customer Masterdata VAT Jp" width="1920" height="1080" data-path="images/CustomerMasterdata-VAT.jpg" />
  </Step>
</Steps>

<Note>
  The correct setup of the VAT ID is particularly important for the correct tax treatment in cross-border trade.
</Note>

## Master Data Checklist

Use this checklist to ensure that all necessary master data is correctly stored:

<Accordion title="Customer Master Data Checklist">
  * GLN stored for each trading partner
  * GLN stored for different billing and delivery addresses
  * VAT ID stored for each trading partner
  * Procuros free field filled out with "CUSTOMER" value for each relevant trading partner
</Accordion>