SAP Message 3G718 - Name '&1' contains a non-alphanumeric character

Diagnosis
The name of the object contains a character that is not in accordancewith the SAP naming conventions. Permitted signs are letters, numbers,and the underscore. However, numbers cannot be the first character inthe name, and underscores cannot be either the second or thirdcharacters in the name.

Procedure
Please correct your entries.