DI Error code -10 adding new item group

Hello all,

I'm trying to add new item groups via DI API (object "ItemGroups") in B1 2007 PL47 and this error occurs:

........DI Error Code: -10 (-10) invalid Cycle Code.

Forcing the value to a valid value, e.g. 1 (the type is long), the same error occurs.

Can anyone help me? Thanks

IZ