If you are reading this post, certainly you are using INTREXX. I will not give you a direct answer but rather some clues that will help you to find the errors.
Feel free o drop a comment sharing with us your experience with this error. If it persists feel free to knock me.
- Take a break and drink a glass of water because there is a silly mistake in your code
- Have you changed your data group ?
- Recheck carefully all data types with the references, if possible rewrite your query
- Check your punctuations: comma, semicolons...
- Make sure you have the right syntax for your query operation
Feel free o drop a comment sharing with us your experience with this error. If it persists feel free to knock me.