My problem is that my information is complete but when import the file, shopify me say that "Invalid CSV header: Title headers are missing."
I am saving the file with the name "Product_Import.csv" in excel with the option CSV UTF-8(comma delimit) and with the option CSV (comma delimit)(*CSV), neither options work. help me, please.
Your file is not comma separated but semi colon separated:
Handle;Title;Body (HTML);Vendor;Standard Product Type
Needs to be like this:
Handle,Title,Body (HTML),Vendor,Standard Product Type
Try exporting products from admin and then you will have correct file layout that you can then use to import with.
You can also try loading the file into google drive and exporting in correct format from there. The file is exported correctly from Shopify so sounds like when you open and save it then it is being changed by your program to an incorrect format.