This is a shop system extension for TYPO3 based on PHP 8.
See the file manual.odt under the folder doc of the extension.
Only TYPO3 12 is supported at the moment. You can buy an upgrade for TYPO3 13 at the website Shop System.
If you upgrade to a newer version of tt_products then you sometimes you must execute upgrade wizards in the TYPO3 Install Tool for tt_products. Do not forget to make a backup copy of the database before you execute them.
Only if you are still using TYPO3 < 9 you must execute the renaming of these database table fields manually in phpMyAdmin or a similar database tool.
tt_products_mm_graduated_price: product_uid ==> uid_local graduated_price_uid ==> uid_foreign productsort ==> sorting graduatedsort ==> sorting_foreign * tt_products_products_mm_articles: articlesort ==> sorting_foreign * sys_products_orders_mm_tt_products: sys_products_orders_uid ==> uid_local tt_products_uid ==> uid_foreign
Contribute under Github tt_products .