SAP Message SALV_BS_MSG308 - Only one operator allowed for each filter condition

Diagnosis
Comparison operators ("<(><<)>", ">", "<(><<)>>", ...) and value ranges(identified with hyphens) are used in filter conditions. Only oneoperator or hyphen is permitted for each filter condition. However moreoperators and/or hyphens are used in this condition.

System Response
The filter condition is not used.

Procedure
Enclose the operator characters or hyphens in double quotation marks sothat they are interpreted like normal characters.