Screen layout LFA1-SPERR S4 HANA

[soch55]

Hello All

In the transaction BP, the posting block filed is locked for change as you can see in the screenshot below:

Can someone know how where to find the screen layout of this field to change it?

I didn't find it here :

Thanks in advance.

Regards

[soch55]

I used the transaction MASS to fix that ...

Forget about this question.