This is a shop system extension for TYPO3 based on PHP 7 and PHP 8.
See the file manual.odt under the folder doc of the extension.
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 .