Here we would like to draw your attention to DNO_CUST05 transaction code in SAP. As we know it is being used in the SAP CA-NO (Messages in CA) component which is coming under CA module (Cross Application).DNO_CUST05 is a transaction code used for Subscreen Control in SAP.
It comes under the package DNO.
Transaction DNO_CUST05 technical data table
| Tcode | DNO_CUST05 |
| Purpose | Subscreen Control |
| Module | CA |
| Component | CA-NO |
| SAP Package | DNO |
| Type | P |