Hi
For changing the material type, there are certain pre-requisites
Please check this link for those
Changing a Material Type - Material Master (LO-MD-MM) - SAP Library
Also, this hase been discussed in following thread
Hi
For changing the material type, there are certain pre-requisites
Please check this link for those
Changing a Material Type - Material Master (LO-MD-MM) - SAP Library
Also, this hase been discussed in following thread