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- Accounting
These selections are for a product oriented company, a service company would priorize more Sales and Stock Management.
This is the benefit of modules, a company can select the ones that fit the correct purpose of the business activity.
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## Interconnection
As described in more details in the [Machines](https://code.33co.de/ehofmann/ERP-samk/src/branch/master/03Comparison.md#machines) section on ERP comparison, a way to interconnect two different systems like an ERP with **Stock Management** and **Purchase** with a [CMMS](https://www.ibm.com/topics/what-is-a-cmms). Is for example a situation that the CMMS will consume the parts from the ERP inventory, when a preventive maintenance has been executed and the **Stock Management** module will trigger the purchase of replacement parts.