SEF file for EDIGAS

I search a SEF file corresponding to EDIGAS to create a flat file schema from this file.
EDIGAS is an EDI format message.
The EDI standard selected for those messages is the UN/EDIFACT standard.
The EDIFACT definition can be found in the D 96.A Directory published by the UN/ECE.
Can we use the provided 96A.sef file or make adaptations on it to take into account EDIGAS specificities
Thank you