Buttons Save and Back , Save , Cancel not appear

Dear experts

I have add the infotype 0022 using the steps of the following

Adding any Info Type IN ESS in EHP5/6 through WebDynpro Configuration

However when try of Edit the data the system not show the Buttons Save and Back , Save , Cancel as appear with other Infotypes(Address, Family members, persona data)

And only appear the screen without this buttons for save the information.

What is the cause of this issue?

Thanks