How To Fix S1561 - Aggregation has been started; wait a short time and reenter ST03

S1561 - Overview

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 561

• Message text: Aggregation has been started; wait a short time and reenter ST03

What causes this issue?

You requested a refresh of today's workload data. NOTE: Workload data
will always be refreshed with data from the last full hour. You will
never see data from the current hour.

System Response

The required aggregation of statistical data has been started in
parallel for all instances.

How to fix this error?

Since the aggregation takes place asynchronously and takes some time,
wait a minute and go back to reselect todays workload data in
transaction ST03.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1561 - Aggregation has been started; wait a short time and reenter ST03 ?

  The SAP error message S1561 indicates that the aggregation process for workload data in transaction ST03 (Workload Analysis) has been initiated, and the user is advised to wait for a short period before trying to access the transaction again. This message typically occurs when the system is busy processing workload data, which can happen during peak times or when the system is under heavy load.
  
  Cause:
  
  Ongoing Aggregation Process: The aggregation of workload data is a background process that compiles and summarizes performance data. If this process is currently running, it can prevent users from accessing the ST03 transaction.
  High System Load: If the system is experiencing high load or resource contention, it may take longer for the aggregation process to complete.
  Frequent Access: If multiple users are trying to access ST03 simultaneously, it can lead to contention for the aggregation process.
  
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few minutes