Here we would like to draw your attention to CMP_REASON transaction code in SAP. As we know it is being used in the SAP SD-BIL (Billing in SD) component which is coming under SD module (Sales & Distribution).CMP_REASON is a transaction code used for Customizing for Complaints Reasons in SAP.
It comes under the package CMP.
Transaction CMP_REASON technical data table
| Tcode | CMP_REASON |
| Purpose | Customizing for Complaints Reasons |
| Module | SD |
| Component | SD-BIL |
| SAP Package | CMP |
| Type | P |