Hi Tim,
OTR:
The main task of the OTR is to support the creation and translation of texts.
The OTR allows translation of texts for BSP applications and provides additional advantages. Terminology is more uniform and texts can easily be reused. This means texts are of high quality right from the start. This also considerably reduces costs for text corrections, such as for spelling mistakes, inconsistent terminology, incorrect style, and so on. Terminology changes can be done from a central location.
The BSP or BSP application is separated from the texts. Any changes to the BSP do not influence the texts. This means you can translate the texts independently of the BSP.
SE91 Messages:
Messages allow you to communicate with users from your programs. They are mainly used when the user has made an invalid entry on a screen.
To send messages from a program, you must link it to a message class. Each message class has an ID, and usually contains a whole set of message. Each message has a single line of text, and may contain placeholders for variables.
All messages are stored in table T100. You create and edit them using Transaction SE91. Once you have created a message, you can use it in the MESSAGE statement in a program.
Regards,
Kamfrk.