Restrictions on Names
The names of in-memory objects (tables, thesauri, character maps, and Learn Models) must not contain any of the following characters:
In addition, the name of a table must not contain a period (.).
The field names must not contain a period (.), colon (:) or new line character.
When using Checkpoint / Restore, the length of an object name is restricted to the maximum file name length minus 6 bytes. On most modern file systems, the maximum file name length is 255 bytes, so the maximum object name length would be 249 bytes.