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Visual DataFlex ElfProef API - Developers

The Visual DataFlex ElfProef API allows users to perform ElfProef tests. This is a CRC (cyclic redundancy check) technique used as a test in Dutch electronic payments to determine if a bank account number is valid. It does so by adding the given number's digits and dividing by 11. Valid numbers will return an integer. This API can be accessed via SOAP calls using the XML data format.