Why I cannot create a screen variant?

Hi Gurus,

In transaction SHD0 I am trying to create a screen variant but it is marking the following error:

Attribute for user MYUSER contains errors. Inform system admin.

Message no. BBP_PU245

In transaction SU53 display message: The last authorization check was successful.

The screen variant I am trying to create is for:

Transaction code: BBPSC02

Program: SAPLBBP_SC_UI_ITS

Screen: 300

Somebody can say to me why marks the error?

Thanks