Error determining posting period (info structure S008, variant Z1, RC 3)

Everyone,

When entering an order, we are getting this message: Error determining posting period (info structure S008, variant Z1, RC 3). I I tried changing periods (in sand box) in OB52 with no luck. Tried with OMO1 but could not find the structure. Is there any place else that I can change posting periods for this particular info structure?

Apprecaite taking time to answer this question!!!