Do you mean to change the vendor id for an existing transaction to a different vendor id?
Or do you mean to change the vendor id for an existing vendor to something else. We have vendors set up with a non-descript ID, V1027 for Ingram, instead of Ingram as it is in our secondary company. There is a utility to change these. It will depend how many existing transaction have the 'wrong' ID that will need to be changed. It ran all weekend trying to change V1027 to Ingram for us. So we left it alone.
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