You are not able to add negative quantity in the Sales Order.
Reproducing the Issue
- Go to the Sales Orders work center.
- Create a New Sales Order from Common Tasks.
- Add mandatory details in the sales order.
- Select the View All button and go to the Items tab.
- Add a product at Item level and add a negative quantity.
- Save the sales order.
- The system does not allow to have negative quantity.
SAP Business ByDesign is working as designed.
The standard SAP Business ByDesign system does not support negative quantity in the Sales Order.
KBA , AP-SLO , Sales Order Processing , How To