Impact to donors: not hearing complaints about this, but we can guess from the ELEVATE spreadsheet that 5 - 20% of all non-English attempted donors are seeing this error page in the wrong language.

I was testing an esES donation and got our "Your transaction could not be accepted page" when submitting my payment details, probably for AVS reasons. However, the error page was in English when I had tried to donate on a Spanish flow.

I tested this in svSE and zhCN and got an English error page for those as well when I provided an incorrect CVV. What's weird is that the svSE and esES error links showed that my language was es or sv, but the zhCN flow seemed to have forgotten my language. See examples below:

• esES transaction (ID 5312902143). Link for error page:

https://payments.wikimedia.org/index.php?title=Special:GlobalCollectGateway&appeal=JimmyQuote&ffname=error-cc&gateway=globalcollect&country=ES&currency_code=EUR&amount=1&language=es&utm_source=.default~default~default~default~control.cc&utm_medium=&utm_campaign=&payment_method=cc

• svSE transaction (ID 9843227455). Link for error page:

https://payments.wikimedia.org/index.php?title=Special:GlobalCollectGateway&appeal=JimmyQuote&ffname=error-cc&gateway=globalcollect&country=SE&currency_code=SEK&amount=6.6&language=sv&utm_source=.default~default~default~default~control.cc&utm_medium=&utm_campaign=&payment_method=cc

• zhCN transaction (ID 991958335). Link for error page:

https://payments.wikimedia.org/index.php?title=Special:GlobalCollectGateway&appeal=JimmyQuote&ffname=error-cc&gateway=globalcollect&country=CN&currency_code=CNY&amount=6.5&language=en&utm_source=.default~default~default~default~control.cc&utm_medium=&utm_campaign=&payment_method=cc

I don't know what to make of this, but it definitely seems like there is a problem with languages for our error pages. This may also be related to T94506, not sure.