I have created Company Code and all other configuration related to the CCode. Also in MM I have created purchase order, created vendor, material etc. I couldn't activate the PO due to the following error messages in red:

1. MAINTAIN TOLERANCE LIMITS FOR TOLERANCE KEY PE ACCOUNT ASSIGNMENT
2. CONTROL INDICATORS FOR CONTROLLING AREA DO NOT EXIST.

I have assigned controlling area to company code and I could see the controlling area in existance via master file and gl verification.

1. MAINTAIN TOLERANCE LIMITS FOR TOLERANCE KEY PE ACCOUNT ASSIGNMENT ----> Please follow this link --> SPRO ---> MM---> Purchasing --> Purchase Order --> Set Tolerance limits for price variance --> Here you have to set for Tolerance keys PE and SE. Just copy them from std co. code.

2. CONTROL INDICATORS FOR CONTROLLING AREA DO NOT EXIST. ---->

In Controlling --> General Controlling --> Maintain Controlling Area --> Maintain Controlling Area --> Activate Components/Control Indicators --> You need to check if you want to activate the order management/activity based costing/commitment management etc.