name field whitespace problem (422 error, error processing checkout)

Good day again,

you were right. Some shipping labels were missing translation. I asked ChatGPT and it gave me instructions how to solve it. I will add the solution here in case someone else encounters the same problem while using WPML.

🚨 Root Cause Identified: The issue was not with the product, but with the shipping costs (“shipping_fee”)

The Mollie log shows that the issue was not caused by the product name but by an empty label in the shipping costs.

🔎 Problematic line in your log:

{“type”:”shipping_fee”,”name”:” “,”quantity”:1,”vatRate”:19.09,”unitPrice”:{“currency”:”EUR”,”value”:”4.99″},”totalAmount”:{“currency”:”EUR”,”value”:”4.99″},”vatAmount”:{“currency”:”EUR”,”value”:”0.80″},”metadata”:{“order_item_id”:”700757″}}

→ Here’s the issue:
👉 The value "name": " " consists only of a space, which is not accepted by Mollie.
👉 This means WPML removed or incorrectly translated the shipping fee name during checkout in the original language.

✅ Solution: Correct the shipping cost name1️⃣ Manually check and fix it

• Go to WooCommerce > Settings > Shipping
• Open your shipping zones & methods
• Change the shipping method name (e.g., from “Standard” to “Standard Shipping”)
• Save the changes and place a new test order.

2️⃣ Fix WPML translations for shipping names

If WPML incorrectly handles the shipping name:

• Go to WPML > String Translation
• Search for:
  • "shipping"
  • "Versand"
  • "shipping_fee"
• If you find an empty or incorrect entry, replace it with "Shipping Costs" or "Standard Shipping"
• Save and test again.

Final Solution: Multiple “Shipping” entries contained only a space. I set the correct translation – and now everything works again! 🚀

• This reply was modified 1 year, 3 months ago by nickfarelli.