Render: Rename error

[BautistaC888]

Hello,
I´m trying to rename the pdf files by groups.with a concatenate: "ID_PERIOD_NAME"

But this error occurs:

If anyone knows how to fix, i will appreciate it.
Thank you.

[BautistaC888 · Accepted solution]

I had to replace the special characters in their names.

I fix it myself,
Thank you for reading.