How To Fix /SAPAPO/RET_MESSAGES021 - Selected restrictions have been deleted

/SAPAPO/RET_MESSAGES021 - Overview

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 021

• Message text: Selected restrictions have been deleted

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/RET_MESSAGES021 - Selected restrictions have been deleted ?

  The SAP error message /SAPAPO/RET_MESSAGES021 Selected restrictions have been deleted typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with planning or scheduling activities. This message indicates that certain restrictions (such as resource constraints, time constraints, or other planning restrictions) that were previously set have been deleted or are no longer valid.
  
  Cause:
  
  Manual Deletion: The restrictions may have been manually deleted by a user or through a process that modifies planning data.
  Data Consistency Issues: There may be inconsistencies in the planning data, leading to the automatic removal of certain restrictions.
  Changes in Master Data: Changes in master data (like resources, products, or locations) can lead to the deletion of restrictions that are no longer applicable.
  Planning Version Changes: If you are working with different planning versions, restrictions may not be valid in the current version.
  System Configuration: Certain configurations or settings in the APO system may lead to