F110 - The fields were blocked

Hi,

I created one payment proposal by F110 transaction. My payment proposal was finished with success.

But, I need to create another payment proposal with same date, changing only the "identification".

When I changed the identification, and I tried to change the fields (parameters fields for example), but this field was impossible of change and unable to access.

***Just possible to create another payment proposa if I exit the transaction and enter again.

Please, could anyone help me?

How additional information, recently I applied some SAP notes.

Thanks

Dennis Lima