Error "Modulus check failed" returned for some Santander sort codes

Problem

Eight-digit account numbers fail the Bank Wizard modulus check for the following Santander sort code ranges:

• 133000 - 133999 (formerly Abbey)
• 720000 - 726616 (formerly Alliance & Leicester)
• 892616 and 980000 (formerly Alliance & Leicester Commercial Bank)

Cause

For these sort codes, the account numbers given to customers are 9 digit.

The accounts are changed to 8 digit by taking the first digit of the account number and using this as the final digit of the sort code. The modulus rule is then applied to the new sort code and transposed eight-digit account number.

Resolution

To perform modulus checking, you must get the full nine-digit account number from the customer.

Applies to

• Bank Wizard - General