Multi SUN file add-on for BACS software iConnect


To help larger Bureau's, APT has introduced a Multi SUN file add-on. This allows our iConnect clients to submit both credits and debits for multiple bank accounts/service user numbers within one file.

This is particularly useful for Bureau’s that may be submitting multiple payments on behalf of several clients. With our current standard process, you would need to submit a single file per client. With the Multi SUN option, you can put all the clients in a single file, speeding up the processing time drastically.

Multiple SUNs in one file

Multiple bank accounts in one file

Saves time and streamlines the payment process


To learn how MULTI-SUN file add-on can help your team save time.

Authorised and regulated

by the Financial Conduct Authority

40 million

transactions processed annually

Over 800

active service users

£32 billion

transfered annually


The multi sun file is achieved by utilising the Bacstel Standard 18 file format. TheBACSTEL standard 18 format contains all the submission details required by BACS in a single file.

The file structure contains parameters that can be changed to determine whether the data is a single record or multi record file.

We then configure the option for multi sun files for your company on our platform which allows this format through.

Validation and modulus checks are still completed on all individual transactions.


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