TOPIC: New item fields - Content cannot be saved

Hello,

We need to add 2 custom fields in [Item fields]

The first one [Unité] is ok, and content could be added and saved.
The second one [Prix par Kg] was created and shows, but content cannot be saved.

Also, when trying to delete a custom field I get an error message: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '/ Kg' at line 1 SQL=alter table ig3ri_iprice_item drop Prix / Kg; "

Address of the website: www.lafermeencroix.ch/index.php/boutique...erme-en-croix/poulet

Thanks for your help and regard

Please be careful when you naming the item field. The caption of the system name of the field is "System field name (a..z only):". Why you are using other characters in the system field name? You must use a..z latin characters only for the system field name. No spaces, no special characters, a..z characters only.
Now you need to delete this field manually using PHPMyAdmin utility. Open table #__iprice_pricefields and delete row with this field. Then create the field again with the correct field name using the Item field manager in Joomla backend.