Dear Edward Stroger.
Following ur questions..,
1) What other business areas are affecting fields SSTDORT and SLAGEWE? Would any of the other business areas affect the configuration of RE-FX.
==> No. this two fileds just only for informational purpose. Do not affect any other fields.
2) Was the above the right portocol to reset these two fields to make them editable?
==> You just only change filed status ? you can check below configuration.
A) Field group attribute : Field Group 17 (Location) and check Function Module for this field group.
3) Since these are Standard SAP fields in VIBDBE, could these two fields have any effect in FI?
==> No, this fields don't effect FI module.
Regards,
yeong-chul.jeong