Same material with two sources , to be indentified by Batch management

Hello,

I have a scenario where one material is manufactured inhouse 70% and externally 30%. We are using same material number for the same.

Now if there is rejection in the further operations, we want to identify the same by using different batch nos. and batch characteristics for inhouse and externally procured material.

How to configure this scenario by using batch management?

For getting the MRP suggestion for two sources , i have used two versions and used quota also. But still i am not getting the exact suggestion for 70 % and 30 %.

Please let me know which master data to be corrected and how the scenario to be configured.