Infotype 2006 (error with default values for interval)

Hi,

Can any one pls help me with this:

when I open info type 2006 to create for an employee I am getting a error screen showing

"no valid interval for key 1 99 10"(where 1 is our esgg and 99 psgg)...which is showing error with default values for interval.

how can i change the DEFAULT VALUES FOR INTERVAL

Thanks in advance

Gopi Palleti