What to include in software documentation for PCI Compliance application

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Good Morning,
 Our organization wants to be PCI Compliant and is working towards that end. Part of the application process is to provide documentation of the software. I know that t
he Tessitura software has been audited for Payment Application Best Practice (PABP). The security standards met by Tessitura in the PABP audit will meet Security Standards (PCI DSS) compliance.

May I know what sort of documentation should we provide? How low should the documentation go? Should we go down to data structures or would a flow chart of the credit card data flow (showing encryption methods) be sufficient?

Any help anyone could give would be great, I would especially like to see some examples of documentation that has been submitted

Thank you very much!

Vicky