Updating a Sales Forecast

Hi guys,

I am on 2004A patch 26 using the DI API version 6.7 (also patch 26).

When I access a salesforecast object from the company using SAPBobsCOM.SalesForecast objects getbykey() function :

The object loads fine and I can access the header & line values.

My problem is this when I want to update the object using .update - I get the error : -5002 (Two forecasts of an item refer to the same date [OFCT.Name][line: 1])

Does anyone know how this can be resolved.

PS

(I made sure its the only forecast for that day (date) in the entire system & it's not associated with any MRP scenario)