Faster Payments enablement guide - NatWest

Option 1 – Merged CAS file
Impact
With this option, Faster Payments will be included within your existing CAS file. Impacts and changes required are
detailed in the previous slide but details specific to the merged CAS file are detailed below:
Your sort code will be enabled on the Industry Sort Code Directory (ISCD)
The file you receive will now also contain the following types of Faster Payment with new transaction codes:
Code 68 – Faster Payment Incoming Credits
Code 69 – Faster Payment Return Credits
Code 40 – Faster Payments Reversal Debits (see Appendix A )
The file availability time will now be 19:30 and this may be later than you currently receive your CAS file
If you receive a merged CAS file, you can decide at any time to migrate to a separate Faster Payments
file. Parallel running (receiving both files concurrently) will be available on request for one month to assist
your testing and transition.
Changes Required
A new bulk credit will be posted to your settlement account each day for Faster Payments. Since the Faster Payments
value date is the same day, your CAS file will reconcile against settlement transactions over two business days:
Faster Payments settlement – same day as the file is made available
Bacs Credits settlement transaction – business day after the file is made available
Credit Clearing settlement transaction – business day after the file is made available.
File Frequency: Weekly, Fortnightly or Monthly Reports
As Faster Payments may be received at anytime during the day, you will be required to take a daily file for Faster
Payments. If you currently take your file less frequently than once a day, you can continue to do so for Bacs and
Credit Clearing.
Although we will generate a Faster Payments file every day, you will still have the option of collecting several files
at once at your regular scheduled frequency instead of picking them up each day. You should bear in mind your
customer proposition once real-time fund transfers become established.
File name
A new file name will be created for the merged CAS file and your internal systems will need to be updated to
recognise this.
File availability time
If you currently download your CAS file before 19:30, you will need to change your scheduling to retrieve the
file after 19:30. If you process files on an overnight batch basis, you should check the timing of this process.
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Reversals
Reversal transactions may be received. These will be included in your CAS file with a transaction code of 40.