not allow change in months whose revenue has already been recognized
Here we have a big problem!
We created revenue contracts, for example with a total value of 240k, divided by 12 months.
We recognize, for example, January revenue at 20K (1/12).
However, in February the customer needs a downgrade, and the contract value is now 180K.
When we launch this, Netsuite automatically puts a value of (-5K) in January.
How do I not allow the system to change the period that has already been closed and recognized?