In this case, we need to update the Max Stock Level (MABST) in the MARC table of SAP S/4HANA Retail using transaction MM46. To achieve this, we will prepare an Excel file with the required data and import it into SAP. Below are the steps to perform this update efficiently.
Step 1: Identify the Tables and Fields to Update
For this case, we need to update:
- Table: MARC (Plant Data for Material)
- Field: MABST (Max Stock Level)
Step 2: Prepare an Excel File (.XLSX)
Create an Excel file with three columns:
- Material (MATNR)
- Plant (WERKS)
- Max Stock Level (MABST)
Important: The first row should contain the technical field names to match the SAP system requirements. (See image below for reference).

Step 3: Execute Transaction MM46
- Open SAP GUI and run Transaction MM46.
- Select the table (MARC) and the fields that need to be updated.

Step 4: Import the Excel File
- Click on the "Import" button.
- Select the prepared Excel file (.XLSX).
- Ensure the system correctly maps the fields.

Step 5: Execute the Update
- Confirm the settings to ensure the upload includes the header line (first row with technical field names).
- Click on the "Execute" button.

Step 6: Preview Imported Data from Excel
- Observe the uploaded data to ensure all fields are correctly populated.
- Click on the "Execute" button.

Step 7: Confirm Imported Data on the Standard Screen
- Observe the imported data to ensure accuracy.
- Click on the "Test" button to validate the entries before finalizing the update.

Step 8: Review Results
- Observe the results of the mass update.
- Check the log for any errors or successful updates to ensure the process was completed correctly.

Conclusion
Using MM46 simplifies the mass update of material master data, saving time and ensuring data accuracy. This method is especially useful in SAP S/4HANA Retail, where frequent stock level adjustments are required.