Unbalanced journal entry, suspense is not allowed

Hello,

i have tried to identify why we are having this issue if:

suspense account is defined  (but not enabled) on SOB definition.

we are on Oracle Applications : 11.5.10.2 version and patch level:11i.GL.K

as per some problem knowledge Oracle should work like this:

Note: If you do not enable this feature, General Ledger will post

      rounding differences to the transaction line with the largest

      amount. You will need to add an account for suspense to use this

      facility but suspense does not need to be enabled.

any hint there?

thx Mirka