How To Fix OK001 - Entry not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: OK - Logical database PS

• Message number: 001

• Message text: Entry not allowed

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 OK001 - Entry not allowed ?

  The SAP error message "OK001 Entry not allowed" typically occurs in the context of controlling (CO) or project systems (PS) when a user attempts to perform an action that is not permitted due to various reasons. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Authorization Issues: The user may not have the necessary authorizations to perform the action.
  Status of the Object: The object (e.g., cost center, internal order, project) may be in a status that does not allow the entry (e.g., closed, locked).
  Period Closing: The posting period may be closed, preventing any new entries.
  Configuration Settings: Certain configuration settings in the controlling module may restrict entries based on specific criteria.
  Data Entry Errors: Incorrect data entry or missing mandatory fields can also trigger this error.
  
  Solutions:
  
  Check Authorizations: Ensure that the user has the necessary authorizations to perform the action. This can be done by checking the user's roles and authorizations in the SAP system.
  Review Object Status: Verify the status of the object you are trying to post to. If it is closed or locked, you may need to unlock it or change its status.
  Open Posting Period: Check if the posting period is open. If it is closed, you may need to open it or wait until the next period.
  Configuration Review: Consult with your SAP configuration team to review any settings that may restrict entries. This may involve checking the controlling area settings or project settings.
  Correct Data Entry: Ensure that all required fields are filled out correctly and that the data being entered is valid.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KSB1 (Cost Centers: Actual Line Items), KO03 (Display Order), or CJ20N (Project Builder) to analyze the data related to the error.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. You can search for notes in the SAP Support Portal.
  Documentation: Review SAP documentation for the specific module you are working with (e.g., CO, PS) to understand the rules and restrictions that may apply.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.