Failed to save modifications to the server

Hi fabiojoa , 

If possible, could you please trsnaslate the error information to English? Then I will help you more correctly.

Thanks for your understanding and support.
Best Regards,
Zoe Zhi

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi fabiojoa , 

Please check "n/a" value in your dataset , did this prompt when you use date function? If so, I think this might be related to date function can't recognize "n/a"? You could try to replace this to null or other date which could used in function.

Best Regards,
Zoe Zhi

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.