Once the Redsys payment gateway was configured in the test environment using the information provided by the bank, we noticed that some of the settings requested by the bank, such as the encryption type, are not appearing in the plugin.
We configured everything the plugin allows with the data provided by the bank, but when placing an order, Redsys is not working, displaying error SIS0434. Only the terminal number is being sent; the merchant number, purchase amount, and order number are not appearing.
I have seen other similar problems on the blog, so I would appreciate a prompt response to this issue.
Thank you very much.