https://community.squareup.com/t5/Payments-Troubleshooting/Customers-getting-POST-Error/m-p/257603#M58049 <P>Hi <a href="https://community.squareup.com/t5/user/viewprofilepage/user-id/360978">@Suzanne65</a>, sorry to hear you are getting this error! From the post, it looks like the payment is being declined. I'd recommend the customer contacting their bank in this case for more information and to check that the details entered are correct.&nbsp;</P> <P>&nbsp;</P> <P>More information <A href="https://squareup.com/help/gb/en/article/5082-why-did-my-payment-fail" target="_blank">on declined reasons can be found in our Support Centre</A>.&nbsp;</P> Wed, 24 Mar 2021 16:46:16 GMT tranguyen 2021-03-24T16:46:16Z https://community.squareup.com/t5/Payments-Troubleshooting/Customers-getting-POST-Error/m-p/257544#M58048 <P>Hi,</P> <P>&nbsp;</P> <P>My customers keep getting the below error message when trying to purchase on my weebly site.</P> <P>&nbsp;</P> <P><SPAN>Charge attempted for £38.00, but failed. The payment processor supplied the following message: "Client error: `POST <A href="https://connect.squareup.com/v2/locations/K652XDF79GYMB/transactions" target="_blank" rel="noopener">https://connect.squareup.com/v2/locations/K652XDF79GYMB/transactions</A>` resulted in a `402 Payment Required` response: {"errors":[{"category":"PAYMENT_METHOD_ERROR","code":"CARD_DECLINED","detail":"Card declined.","field":"tenders[0]"}]}"</SPAN></P> <P>&nbsp;</P> <P><SPAN>Can anyone help please?</SPAN></P> <P>&nbsp;</P> <P><SPAN>Thanks</SPAN></P> Sun, 21 Sep 2025 13:15:31 GMT https://community.squareup.com/t5/Payments-Troubleshooting/Customers-getting-POST-Error/m-p/257544#M58048 Suzanne65 2025-09-21T13:15:31Z https://community.squareup.com/t5/Payments-Troubleshooting/Customers-getting-POST-Error/m-p/257603#M58049 <P>Hi <a href="https://community.squareup.com/t5/user/viewprofilepage/user-id/360978">@Suzanne65</a>, sorry to hear you are getting this error! From the post, it looks like the payment is being declined. I'd recommend the customer contacting their bank in this case for more information and to check that the details entered are correct.&nbsp;</P> <P>&nbsp;</P> <P>More information <A href="https://squareup.com/help/gb/en/article/5082-why-did-my-payment-fail" target="_blank">on declined reasons can be found in our Support Centre</A>.&nbsp;</P> Wed, 24 Mar 2021 16:46:16 GMT https://community.squareup.com/t5/Payments-Troubleshooting/Customers-getting-POST-Error/m-p/257603#M58049 tranguyen 2021-03-24T16:46:16Z