I have made a batch in tfgld1101m000, but someone says that it has to be in previous month.
I have re-opened the batch and tried to make periodics, but the kind of batch is not usable for this.
Is it possible to change the fiscal period of the batch without re-typing all information?

Morning

You can do it Maintaining Tables. You will have to change at least:

Tfgld018
Tfgld100
Tfgld102
Tfgld107

If you are using transactions related to customers or suppliers you will also have to change, al least, tfacp200, tfacr200.

But if you are not accostomed to use this method I advice you to retype the batch.

Regards

When I watch to the batch, the flacks of fiscal period, Tax year and Tax period are white, just like the flack for description of the batch.
The description of the batch can be changed with Special. Why can't the others be changed?

Once you have created the batch and introduced a type of transaction you cannot modify the periods. In order to do so you should delete the registers, the type of transaction, and create a new batch.

I am sorry for you but there is no standard solution for that. As I told you in my first message you should go to Maintain Table and I also advice you to avoid this option if you are not an expert.