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UPF_VARIABLES_REPLACE - Replace Variables
UPF_VARIABLE_USER_EXIT - An example of variables of type User-Exit
UPF_VARIABLE_USER_EXIT_ATTR - Example of attribute variables of type User-Exit
UPF_VARIABLE_USER_EXIT_CHAR - Example of characteristic variables of type User-Exit
UPF_VARIABLE_USER_EXIT_HIER - Example of hierarchy variables of type User-Exit
UPF_VARIABLE_USER_EXIT_NUM - Example for number-valued variables of type user-exit
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