When approving a Sale Order it
computes the sum of:
The credit the Partner has to paid
The amount of Sale Orders approved
but not yet invoiced
The amount of the Sale Order to be
approved, and compares it with the
credit limit of the partner. If the
credit limit is less it does not
allow to approve the Sale Order
If the Allow Over Credit is Checked then the
System will not check for the credit limits,
and it will allow that partner to override
the limit.