We have discussed about same error in month June in this discussion Error saving valuation data for material XXX Plant XXXX
Here, your scenario is different but the error is the same. So you may can find your solution in this discussion.
We have discussed about same error in month June in this discussion Error saving valuation data for material XXX Plant XXXX
Here, your scenario is different but the error is the same. So you may can find your solution in this discussion.