# 200: Validation failed

- <OPERATION> request must contain at least one item in shopping basket.
- <OPERATION> Customer must allow credit agency inquiries.
- Billing Address mandatory
- Customer must contain phone or mobile
- Area-code and direct-dial together must contain at least six non-whitespace characters
- Address parameter street must not contain space characters only.
- Address parameter city must not contain space characters only.
- Address parameter zip-code is must not contain space characters only.
- No more than 10 characters allowed for zip-code.
- Instalment number must not be empty.
- Bank-account parameter owner must not contain space characters only.
- Bank-account must contain either bank-account-number and bank-code or iban.
- Bank-account must contain either bank details or reference.
- Bank-account parameter bank code is invalid.
- Bank-account parameter IBAN is invalid.
- Bank-account parameter IBAN (DE) has invalid length (must be 22).
- Bank-account parameter IBAN (AT) has invalid length (must be 20).
- Bank-account parameter BIC is invalid.
- All Shopping Basket Items must contain the same attributes.
- At least one Shopping Basket Item is missing one or more mandatory attributes.
- Payment method INSTALLMENT not allowed for B2B
- Ip-address must not contain space characters only.
- Country Code is mandatory for billing and delivery address.
- Validation failed
- Validation failed - minimum shopping basket amount for longrun installment plan not reached
- Validation failed: Billing address must be an address, not a pick-up location.


Refers to Result Code:

[150: Processing failed](/docs/developer/api_integration/payment_1.8/payment_api_documentation/responses/result/150)