Inês Ortigão 

Can you tell us more?  It's a bit hard to help you without some detail.  For example:

1. what version of Trados are you using?
2. In fact what is Trados for you?  For all I know you might be using Trados Go and not Trados Studio which is where you posted.
3. What is the filetype you are working with?
4. How did you create your project... and what kind of project?
5. How are you trying to save the translation?
6. what happens when you try to save the translation?
7. do you get an error?
8. if you get an error what is it?  What does it say?

Inês Ortigão 

Can you tell us more?  It's a bit hard to help you without some detail.  For example:

1. what version of Trados are you using?
2. In fact what is Trados for you?  For all I know you might be using Trados Go and not Trados Studio which is where you posted.
3. What is the filetype you are working with?
4. How did you create your project... and what kind of project?
5. How are you trying to save the translation?
6. what happens when you try to save the translation?
7. do you get an error?
8. if you get an error what is it?  What does it say?