Hi Rehan,
I don't think there is any standard authorization object in FICA, which controls the amount limit for posting documents.
However, if you are creating a custom authorization object for the above, then its possible to control the amount limit through roles.
For this you have to first maintain the tolerance groups and and the amount limit in the configuration.
Then, you have to create a custom auth. object.
Some of the major steps to create a custom Authorization object are as follows-
(a) T.code SU20 - Creation of new authorization field for tolerance group (V_TFK043V-FKPRO)
(b) T.code SU21 - Creation of a New Auth object in transaction field (FKPRO)
(c) T.code SU24 - Insert of new authorization field e check indicator (green)
(d) T.code SU22 - Check indicator (green)
Once you have completed the above steps, create a new role with transaction PFCG and add transaction FPE1; the new authorisation object.
Now, in event 1119, plug in a custom FM which checks whether the tolerance group which the User has in his role profile allows him to post an amount that is being entered in the transaction.
If the conditions satisfies, the User is able to post the document, other wise not.
Hope it helps...
Thanks,
Amlan