Hi Daniela
I would suggest not to enter the Capitalization date manually...
Let the system populate this field on its own.. When you do the GR, system can populate the Cap date on the basis of Document Date or Posting date
There is a config step in IMG ==> Financial Accounting ==> Asset Accounting ==> Transactions ==
> Specify how default asset value date is determined.
Here, you can choose Document date as the basis for determining Asset Value Date... Now, enter a document date of your choice and system will populate the Cap Date accordingly
Br, Ajay M