Hi i am new learner on SAP. I am trying to learn MM module. Now So far it went smooth making a plant,storage location,Purchase group and warehouse. and i did assain assain them to each other as it suppose to be. But problem started when i tried to create a material master record. when i am trying create upon my plant and storage its says" Tables TCURM and T001w incosistent, Notify your systems administrator".some time say error on valuation level along with the other one. But i did setup valuation leven on plant level. However if i try to create material master data on Plant 1000 and its storage. it does work fine. Please help me. By the way i am practicing on sap 6.0 version. Thank you. Protic