Sinumerik Alarm 103010 Invalid file name
The file name entered:
• Must not have more than 32 characters (letters, digits, underscore; including the block and program ID:_N_ and _MPF), amounts to 25 assignable characters.
• Cannot have any separators (e.g. /).
• Must have letters at the first and second position.
- Siemens Diagnostics Guide by Siemens