Sales Return posting error - Blanket Order

santoshmkcet

Dear All,

In Nav 4.0 SP3,

Posted Invoice was created from Sales Order which in turn created from Blanket Sales Order.

Then using Copy document functionality in Sales Return Order, the posted invoice was selected.

When posted the error attached occured. The error occured due to Blanket Order no & Line No. getting updating in Line.

The blanket order no was removed manually from each line in order to post. Is there any setup by which the sales return order can be posted without manually removing the blanket order no.

Waiting for expert advice.