Is older gerber format RS-247-D acceptable?

Hi all!

This is my first post and I did it because I didn’t find this question answered by the search function of the forum.
Well, I have some files in this format (RS274-D), that has separate aperture file.
Is this acceptable for the fusion service?

Thank you!

Hi there,
Sorry, the gerber file must be RS-274x.

OK Thanks!