Recently we got an issue like, material got created even when there is no tax classification is maintained for some countries ie left blank. Material creation in the above case is happening through the FM BAPI_MATERIAL_SAVEDATA in a workflow where we will be filling all the details through the code. when i checked the program,,the tax classification for some countries are not filling, so ideally while creating material it should give an error but it is not giving instead it is creating material with blank value for tax classification. If we try manually in MM01,,material is not creating with blank tax classification value for the same data. kindly help to resolve this.