Where can I find documentation about SAP display error messages and their meaning?

The primary resources for documentation on SAP display error messages include: 1. **SAP Help Portal (help.sap.com):** Search for the error message number or keywords from the message text. This will often provide detailed explanations and troubleshooting guidance. 2. **SAP Notes (transaction SE38/SE80 and searching the error number or text):** SAP Notes contain solutions to known issues, workarounds, and patches for specific error messages. 3. **SE91 (Message Maintenance):** This transaction allows you to view the message text, class, and number, and can be helpful for understanding the context of an error. 4. **SAP Community Forums and Blogs:** Search for the error message online to find discussions, solutions, and insights from other SAP users.