Usually in in any IT Project you need to add some fine tuning or your ERP systems and some time you want to integrate with other systems from 3rd parties
This Process, is very sensitive and should be done wize with minimum effect on the on original or with new modules Which will added in future to avoid any Issues on original system and keep it compatibility with newer versions.

 
We are in WSL we have a required experience and resources to do such operation and all of our steps is very will documented and included in,
Implementation Guide structure. The necessary documentation is also made available with the activity.

For example, the structure contains the customizing activities for code lists, automatic generation of integration settings, manually maintaining the integration settings, and BADIs.