Account category "ERROR"(suspense) question

Ive been having this activities transactions end up with the account category error (suspense) and then hit a particular account,
is there any place where an activity group is tied up to where (GL account) to post this ERROR category ? , Ive notice this varies from activity group to group.

second, it supposed that this account category error is made when activity groups are set up to edit option 3(substitute-suspense), but I have em in option 4, but I still get transactions coming from BR using this activities, that goes to this ERROR account category

extract from Lawson manual :
"You can define account edits by activity group to validate General Ledger and
activity information during transaction entry. The following levels of validation
are available:
• 1 — GL Only Activity Group
• 2 — No assignment required
• 3 — Yes, substitue error suspense (posts the activity transaction to the
Error Suspense account category if the combination is invalid)
• 4 — Yes, require valid assignment (prevents data entry if the combination
is invalid "

also I have checked the account assignments in AC07 and the accounts used in the transactions are included in those ranges, I wonder what other reason is causing them to go to this ERROR category. iif anyone knows about this, ill appreciate some feedback, thanks!