---
title: "Troubleshooting Compression Operating System Command"
slug: "how-to-troubleshoot-zz-compress-etl-operating-system-command"
updated: 2021-12-29T12:40:13Z
published: 2021-12-29T12:40:13Z
canonical: "success.panaya.com/how-to-troubleshoot-zz-compress-etl-operating-system-command"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://success.panaya.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Troubleshooting Compression Operating System Command

This article explains how to troubleshoot the Operating System Command defined for SAP compression.

## Verifying Operating System Command

1. Run transaction SM49
2. Verify that command ZZ_COMPRESS_ETL or ZZ_COMPRESS is displayed in the list of commands
3. Select the command from the list
4. Select ![](https://cdn.document360.io/f404076c-de23-4609-848e-2dfd4ef701b0/Images/Documentation/image-1638971603794.png)
5. For **Additional parameters -**  
For gzip type:-VThe  **–V****command**displays the gzip version as shown in the screenshot below.  
Remember to remove it from the command parameters after you confirm the version is displayed.
6. Select ![](https://cdn.document360.io/f404076c-de23-4609-848e-2dfd4ef701b0/Images/Documentation/image-1638971615864.png)
7. Verify that the output message is as shown below  
![](https://cdn.document360.io/f404076c-de23-4609-848e-2dfd4ef701b0/Images/Documentation/image-1638971628724.png)
8. Remove any operating system commands incl. -V, then verify that the Definition section is as shown below  
![](https://cdn.document360.io/f404076c-de23-4609-848e-2dfd4ef701b0/Images/Documentation/image-1638971641577.png)

## Verification Steps

In order to verify that the command works as expected, it is highly recommended to perform the following verification steps -

1. Execute the SM69 Transaction
2. Edit the command so that it will execute the gzip -V command
3. Execute (F8), The additional parameters should remain empty
4. If the command returns an error, reinstall gzip on the server  
If successful, create a test file in the DIR_HOME directory on the server (The DIR_HOME can be found in transaction AL11)
5. Change the command parameter back to gzip (remove -V parameter) and execute it (F8). Use the additional parameters to provide the test file and run.  
An "*.gz" file should be created in the same folder