Automated End-to-End Testing and Certification

FPS Hosted Accreditation Service

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Testing Participant Engagement Guide


Technical accreditation for vendors and aggregators

Faster Payments Scheme Limited  (FPSL) has introduced a Technical Accreditation Service standard for FPS gateway software supplied by vendors and aggregators. 

FPSL is obliged to ensure the integrity of the Faster Payments Service, which is regulated as a critical Financial Market Infrastructure. The technical accreditation standard will be awarded to software vendors and/or FPS Service Aggregators that meet rigorous technical standards, thus giving assurance to FPSL and any FPS Participants that choose to connect to the Faster Payments Service via a Technically Accredited vendor/ aggregator. 



FPS Accreditation testing is designed to allow Fintech software solution suppliers an opportunity to functionally test their software. This will ensure that it obeys the syntax rules of the real-time interface to the FPS Central Infrastructure. Accreditation testing covers the ISO 8583 messaging protocol used to reliably exchange FPS payments with other FPS participants via the FPS Central Infrastructure. The FPS Accreditation environment provides a simulation of the messaging interface presented by the real FPS Central Infrastructure and it allows a controlled testing of a software solution in a reproducible way. The overall scope of Accreditation testing allows the following aspects of the interface to be tested:

  • Message Authentication mechanisms;
    • Working key exchange and renewal
    • Validation of message authentication codes
  • Correct usage of message syntax and protocol;
    • Normal payment processing as well as failure conditions
    • Correct usage logical Payment Priority Group logical connections
  • Receipt of system status messages;
    • Unsolicited messages (USMs)
    • Administration messages

The FPS Accreditation testing simulator will allow all of the above to be tested on a simulated interface to a single Payment Service Provider (PSP), or in parallel to multiple PSP interfaces supported by the software solution running as though it is in an Aggregator installation. It allows a Fintech solution supplier to have confidence that their software obeys the functional rules of the FPS messaging protocol and provides an environment in which revised versions of their software may be regression tested to ensure that any changes have not adversely impacted this.

By providing Fintech solution suppliers with a facility in which they can reliably and reproducibly test their software, FPSL is able to provide a technical Accreditation of the tested version of the Fintech's software. This Accreditation provides PSPs, who wish to use this software, the confidence that it obeys the syntax rules of the interface to the FPS Central Infrastructure. This then provides them with the comfort that the software is ready to undergo Functional Certification testing, once they have successfully coupled it with their own systems.


Engagement Process

Anyone wishing to achieve FPS accreditation should follow the process detailed in the Engagement Guide, and associated documentation referenced therein. Click here to download a copy of the Engagement Guide.



This website provides general information about Ascert Limited (“Ascert”) and the products and services it offers, some of them in collaboration with Faster Payments Scheme Limited (“FPSL”). 

While Ascert and FPSL take reasonable care to provide information which is accurate and up to date, it does not undertake to update or correct such information and reserves the right to change, delete or move any of the material on this website at any time without notice. Neither party makes any express or implied representation or warranty as to the accuracy or completeness of any of the information included on this website.

In respect of the Accreditation Service provided by Ascert and accredited by FPSL, while Ascert and FPSL make every effort and take reasonable care to provide a test environment that fully replicates the functionality and messaging standards of the live Central Infrastructure used in the Faster Payments system, neither party guarantees, or makes any express or implied warranty as to the similarity of the live Central Infrastructure, nor that the test environment is free from defects. 

The information contained in this website is not intended to be and shall not be deemed to be an invitation or inducement to become accredited. Subject to contractual terms and conditions and to liability for death, personal injury and fraud, neither FPSL nor Ascert accept any liability for any loss of whatever nature however caused (including if by negligence) arising directly or indirectly from the use of or reliance upon the information on this web site, or the Accredited Service.


Discontinuing Participation

Refer to contract