Message type: E = Error
Message class:  PO - Spooler message 
Message number: 571
Message text: Commands for command group &1 operating system &2 were deleted
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message PO571 indicates that commands for a specific command group and operating system have been deleted. This typically occurs in the context of SAP's Process Integration (PI) or Process Orchestration (PO) environments, where command groups are used to manage various processes and operations.
Cause: Command Group Deletion: The command group specified in the error message has been deleted or is no longer available in the system.
Configuration Issues: There may be configuration issues in the SAP system that lead to the command group not being recognized. Transport Issues: If the command group was part of a transport request that was not properly imported, it could lead to this error. System Updates: Changes or updates to the system might have inadvertently removed or altered the command group.
Solution: Check Command Group: Verify if the command group specified in the error message exists in the system. You can do this by navigating to the relevant transaction
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
PO570 Commands for logical OMS &1 operating system &2 were deleted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PO569 Logical output management system &1 was deleted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PO572 Submit command for operating system &1 not maintained
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PO573 Polling command for operating system &1 not maintained
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.