1. Download all the necessary languages from SAP service marketplace. The languages will be in DVD type (you might need to download all languages files – almost 5GB sizes). Please ensure the languages is download as per your SAP system component version. Let say,  CRM will be have its own languages type and ECC will have its own languages type.

2. Put all the downloaded files into your EPS/in folder.

3. In client 000, execute report from transaction code SE38. Click Add to add a new language entry. As for this example, we are going to add Bulgarian language. Save and click Activate.

4. Click on Simulate to find the new entry for parameter zcsa/installed_languages. Go to transaction code RZ10, choose Instance Profile. Add or edit the parameter zcsa/installed_languages with the new value as per simulation earlier.

5. Go to transaction code SMLT. Choose Language > Classify. Fill in the Language and Supplementation Language. Please be noted that the Supplementation Language can be defined once only. As per SAP recommendation, the Supplementation Language is advisable to set to English or German. After Save, you can see the language entry is added to the SMLT language entries.

6. Highlight the language that you have classified earlier. Choose Language > Import Package. Click on Settings, ensure below settings are selected. Then, click on Find Package (s).  This will searching the language package from the EPS/in directory. You can see the packages state from the Status column (define either the upload language package is valid or not). Select Execute to start import the language.

7. You can monitor the import status from transaction code STMS or SMLT, under Imported Packages folder.

8. Once the import is completed. You can proceed to import the support packages. Choose Language > Special Actions > Import Support Packages. Ensure, the related support packages are downloaded and stored at the EPS/in directory. Once come at Import Language Data, choose Overwrite on Handling Repaired Objects. Wait for the support packages import to complete.

9. Import language parts of support packages is successful.

10. You have now successfully imported & installing the language in SAP. Additional to language import steps, you need to execute the language supplementary to the newly imported language.