How To Fix /SAPAPO/RRP_PT320 - Period "month" cannot be collapsed (already the largest period)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RRP_PT -

• Message number: 320

• Message text: Period "month" cannot be collapsed (already the largest period)

Self-Explanatory Message

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.

What else can you do?

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RRP_PT320 - Period "month" cannot be collapsed (already the largest period) ?

  The SAP error message /SAPAPO/RRP_PT320 Period "month" cannot be collapsed (already the largest period) typically occurs in the context of SAP Advanced Planning and Optimization (APO) when you are trying to collapse a time period in a planning view or report, but the selected period is already the largest time unit available in the hierarchy.
  Cause:
  
  Time Period Hierarchy: The error indicates that the time period you are trying to collapse (in this case, "month") is already the highest level in the time hierarchy. For example, if your planning view is set to display data at the monthly level, you cannot collapse it further since there are no larger time periods (like quarters or years) defined in the hierarchy.
  Configuration Issues: There may be a misconfiguration in the time period settings or the planning view settings that does not allow for further collapsing.
  
  Solution:
  
  Check Time Period Settings: Review the time period settings in your planning view. Ensure that you are not trying to collapse to a level that does not exist. If you need to see data at a higher level, you may need to adjust your planning view to include higher-level periods (like quarters or years).
  Change the Display Level: If you want to see data at a higher aggregation level, change the display level in your planning view to a higher time period (e.g., from month to quarter or year).
  Review Hierarchy Configuration: If you need to collapse to a higher level that is not currently available, you may need to configure your time hierarchy in the APO system to include additional levels (like quarters or years).
  Consult Documentation: Refer to SAP documentation or help resources for guidance on configuring time periods and hierarchies in APO.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context on time period configurations.
  APO Configuration: Familiarize yourself with the configuration settings in SAP APO related to time periods and planning views. This can often be found in the SAP Help Portal or through training materials.
  User Forums: Consider searching or posting in SAP community forums or user groups for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the error and adjust your planning view accordingly.