Here we would like to draw your attention to SMI_MESS transaction code in SAP. As we know it is being used in the SAP SD-BF (Basic Functions in SD) component which is coming under SD module (Sales & Distribution).SMI_MESS is a transaction code used for Maintain Customizable Error Messages in SAP.
It comes under the package VSMI.
Transaction SMI_MESS technical data table
| Tcode | SMI_MESS |
| Purpose | Maintain Customizable Error Messages |
| Module | SD |
| Component | SD-BF |
| SAP Package | VSMI |
| Type | P |