PHOENIX-MEDIA/Magento-Datatrans — pull request #1 by mruoss (2013-09-06 11:05:51+00:00)
Title: Wrong code of payment method "PostFinance E-Finance"

According to your documentation (https://pilot.datatrans.biz/showcase/doc/Technical_Implementation_Guide.pdf) the code for "Swiss PostFinance – PostFinance E-Finance" is PEF, not POS.