We have a rise in the number of COGI errors in our client plants.when we upgrade our system for R/31 version 4.6 to ECC 6.0. we have always have COGI error for certain material component when the confirmation came across even though we have several different batches on inventory.Confirming a production order it would select the oldest batch and consume it but if the oldest batch did not have enough stock to fulfill the amount it would go to the next oldest batch. Could have been changes happen in the functionality behind in my client batch strategy? how could i fix and located this problem? and can it also affect when ever we do material substitution in BOM component?
Please guide and help.