Things to be taken care while attaching an attachment in Infopath form

While working in Infopath form (2010 and above) version. There are lot of things that to be taken care. I like to share one major problem which I faced in my real time working.

There was issue raised by my client is that when I try to attach the attachment in infopath form it is not getting submitted in the list.

I checked the Infopath form, workflow coding in sharepoint everything was okay and doesn't have any error on it. But still the files are not getting attached.

After few hours I came to know that there was a mistake in File name, i.,e While attaching the file in Infopath form, the file name should not have any special characters.

Due to special characters in file name infopath form was not submitting the data to the server.

So, While working in infopath form please be aware that file name should not have the special characters in it.