If you choose the Validate check box while creating a synonym the following special characters are converted to underscores:
| Character | Description | Character | Description | 
|---|---|---|---|
| - | dash | % | percent | 
| 
 | space | | | vertical bar | 
| \ | backslash | & | ampersand | 
| / | forward slash | ( | open parenthesis | 
| , | comma | ) | closed parenthesis | 
| $ | dollar sign | | | vertical bar | 
| . | period | < | less than | 
| ; | semicolon | > | greater than | 
| + | plus sign | ' | apostrophe | 
| * | asterisk | = | equal | 
| . | period | " | double quote | 
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