There are a number of characters that are not able to be input into the document format that is sent to your trading partner.
Below is a list of the most common invalid characters. If you have any of these characters in your data, you will need to remove or replace them.
€ ƒ „ … † ‡ ˆ ‰ Šn ‹ Œ Žn ‘ ’ “ ” – — ˜ ™ š › œ ž Ÿs ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯ ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ Àe Áe Âex Ãe Äs Åve Æ Çlla Èe Ée Êex Ës Ìe Íe Îex Ïs Ð Ñe Òe Óe Ôex Õe Ös × Øke Ùe Úe Ûex Üs Ýe Þ ß à á â ã ä å æ ça è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ Hard Returns
‘ ’ “ ” (invalid) vs ' " (valid)
The invalid set is stylized. You can see that it has more of an angle or curve to it, this is sometimes automatically done by word processors for a stylistic look. For your data to process into the proper formats for your trading partner you need to use the vertical ' " characters.