# ERP workflow

Source: https://developer.avalara.com/services-calculation-en/transaction_workflow/erp/

# ERP workflow

The following workflows describe the process of services purchase and sales for ERPs.

#### Service Purchase Process

_This process helps to validate the electronic invoice of the vendor before accepting this one._

![](https://www.avalara.com/content/dam/assets/illustrations/diagrams/service%20purchase%20process%20\(en%20version\).png)

#### Service Sales Process

_This process calculates the transactions tax for sales._

![](https://www.avalara.com/content/dam/assets/illustrations/diagrams/servicesalesprocess.png)

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