I have read following link in which mention as if Posting period is close then it is possible to change posting date in CO13 transaction.
In our system we have close the Posting period for FI & MM but when i go to change this posting period in CO13 then again it showing Gray out.
Can any one help us to solve this issue.
Our main issue :
In our production system we are going to cancel Production order confirmation for 09.2018 period but that time we got error message as Posting period is close 09.2018
Our FI team is not ready to open this period.