Import of accounting / SIE-files
To import accounting from a business customer, the bank receives a so-called SIE file from the company and they extract it from their accounting software.
Extracting an SIE file is a standard function in all accounting software. Either the company does it themselves or their accountant does it for them. Ask them to extract SIE file for the years not available from UC as well as YTD .
There are four different types of SIE (type 1-4) and the version you should request from the business customer is a so-called SIE-4 file. It contains all transactions/verifications and here the business customer can choose between which date ranges the file should contain.
Note! Always request, whenever possible, SIE-files that contain whole months, i.e. not up to the middle of a month. For example, it is April 19, then request an SIE file with supporting documents until March 31.

ERP-systems and links to info regarding SIE-export
Visma SPCS
Visma Compact 500
Fortnox
https://support.fortnox.se/sie-filer/exportera-sie-fil
Speedledger
https://support.speedledger.se/hc/sv/articles/203269595-Export-SIE-fil
Hogia Small Office
http://support.hogia.se/1103.guide
Hogia Ekomoni
http://support.hogia.se/2286.guide
Bokio
https://www.bokio.se/hjalp/bokforing/import-och-export/hur-exporterar-jag-sie-filer/
e-conomic
http://wiki.e-conomic.se/installningar/foretag/exporterasie
BL Bokföring
http://blasupport.blinfo.se/561.play
Eidson
http://edison.se/support/instruktionsfilmer/export-och-import-av-sie-filer