# 203: Validation of business rules failed

- (Validation of business rules failed): product INVOICE not eligible
- (Validation of business rules failed): product INSTALLMENT not eligible
- (Validation of business rules failed):shopping basket too low for product invoice
- (Validation of business rules failed):shopping basket too low for product installment
- (Validation of business rules failed):shopping basket too low for product ELV
- (Validation of business rules failed):shopping basket too high for product invoice
- (Validation of business rules failed):shopping basket too high for product installment
- (Validation of business rules failed):shopping basket too high for product ELV
- (Validation of business rules failed): product ELV not eligible
- (Validation of business rules failed): product PREPAYMENT not eligible
- (Validation of business rules failed):shopping basket too low for product prepayment
- (Validation of business rules failed):shopping basket too high for product prepayment


Refers to Status Code

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