How To Fix INV201 - You can only call this method one time for each instance

SAP Error Message - Details

• Message type: E = Error

• Message class: INV - Check for Bill Receipt

• Message number: 201

• Message text: You can only call this method one time for each instance

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 INV201 - You can only call this method one time for each instance ?

  The SAP error message INV201, which states "You can only call this method one time for each instance," typically occurs in the context of SAP Business Workflow or when working with Business Object methods in SAP. This error indicates that a specific method of a business object can only be executed once per instance, and any subsequent calls to that method for the same instance will result in this error.
  Cause:
  
  Method Limitation: The method you are trying to call has been designed to be executed only once per instance. This is often the case for methods that change the state of the object or perform an action that cannot be repeated.
  Incorrect Logic: The logic in your code or workflow may be attempting to call the method multiple times for the same instance, which violates the method's constraints.
  State Management: The instance may already be in a state that indicates the method has been executed, preventing further calls.
  
  Solution:
  
  Review the Code: Check the code or workflow logic to ensure that the method is not being called multiple times for the same instance. You may need to implement checks to prevent re-invocation.
  Use Different Instances: If you need to perform the action again, consider creating a new instance of the business object instead of reusing the existing one.
  State Checks: Implement state checks to determine if the method can be called again. This may involve checking the status of the instance before attempting to call the method.
  Consult Documentation: Review the SAP documentation for the specific business object and method to understand its intended use and limitations.
  
  Related Information:
  
  Business Object Documentation: Look up the specific business object and method in the SAP Business Object Repository (BOR) to understand its behavior and constraints.
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific business object or method you are working with.
  Debugging: Use debugging tools in SAP to trace the execution flow and identify where the method is being called multiple times.
  
  By addressing the underlying cause of the error and ensuring that the method is only called once per instance, you should be able to resolve the INV201 error.