# Create Card- woocommerce add a payment method

**URL:** <https://developer.squareup.com/forums/t/create-card-woocommerce-add-a-payment-method/25949>\
**Category:** Questions\
**Tags:** payments-api\
**Created:** [April 29, 2026, 9:03am UTC](https://developer.squareup.com/forums/t/create-card-woocommerce-add-a-payment-method/25949 "2026-04-29T09:03:04Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![billing](https://avatars.discourse-cdn.com/v4/letter/b/0ea827/32.png) [@billing](https://developer.squareup.com/forums/u/billing)\
**Post date:** [April 29, 2026, 9:03am UTC](https://developer.squareup.com/forums/t/create-card-woocommerce-add-a-payment-method/25949/1 "2026-04-29T09:03:04Z")

</div>

Application ID `sq0idp-QuDmVN_Z8-JXDx8OmTxxx` (XactMeasurements Payments) on Merchant ID `MLNS1A28xxx` returns HTTP 400 `INVALID_CARD_DATA` on every `POST /v2/cards` request despite a valid `source_id` (cnon: from Web Payments SDK `tokenize()`), valid `verification_token` (verf: from `verifyBuyer({intent:'STORE'})`), and valid `customer_id` (created successfully via `POST /v2/customers`). Trace ID example: `CDN-3068d7ba-1c3b-4674-9ee6-1a7e62c3a75f`. Customer creation works (200), card creation always fails (400). Please check whether this application or merchant has a hold or restriction on the Cards API. Other Square accounts I own can create cards on file with identical request structure.

---

<div class="post-metadata">

**Author:** ![josh-square](https://avatars.discourse-cdn.com/v4/letter/j/77aa72/32.png) [@josh-square](https://developer.squareup.com/forums/u/josh-square)\
**Post date:** [April 30, 2026, 9:11pm UTC](https://developer.squareup.com/forums/t/create-card-woocommerce-add-a-payment-method/25949/2 "2026-04-30T21:11:32Z")

</div>

Hi @billing! The `INVALID_CARD_DATA` error is a catch all error for cards that failed to be stored on file. Often times these failures are a result of a decline on the card issuer’s side, and those card issuers do not always share the exact reasoning of the decline.

We recommend handling this error by prompting the customer to retry storing the card (in case there was an issue with entering the card details), then reaching out to their bank for further help if needed. If their bank is unable to assist, they will need to use a different card.