Creating Company Code is a 2 Step process
1) Create Company Code
2) Assign Company Code to Company
Define Company Code
Step 1) Enter Transaction code SPRO in the command field
Step 2) In the next screen Select SAP reference IMG
Step 3) In next screen Display IMG follow the menu path
SAP Customizing Implementation Guide -> Enterprise Structure ->Definition->Financial Accounting->Edit, Copy, Delete, Check Company Code
Step 4) In the next screen, select activity - Edit Company Code Data
In the Change View Company code screen
Step 5) Select New Entries
Step 6) In the Next Screen Enter the Following Details
- Enter your Unique Company Code Number
- Enter Company Name
- In the Additional Data section Enter City
- Enter Country for the Company
- Enter Local Currency
- Enter Default Language
Step 7) Click Address Details button on same screen
Step 8) Enter Address Details for the Company this will appear in print forms
- In the Name Section Enter Title and Company Name
- In the Search Term section Enter Search term 1 and 2
- In the Street Address section enter street, postal code, city, country
- In the P O Box Address section Enter PO Box and Postal Code
- In Communication Section Enter appropriate details
Step 9) After Completing this information Press Save 
and Enter your Change Request number.
You have successfully created a new Company code.
Assign Company Code to Company
Step 1) In the SAP Reference IMG Select the Menu path
SAP Customizing Implementation Guide ->Enterprise Structure->Assignment->Financial Accounting->Assign Company Code to Company
Step 2) In the Next Screen Enter the unique Company ID against the Company Code you
Want to assign to this Company.
Step 3) Press Save and Enter the Customizing request Number
You have assigned the desired Company code to the Company
