How To Fix /PM0/ABP_BCA_MSG001 - Error while calling the bus. function; &1 was transferred, &2 is expected

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABP_BCA_MSG -

• Message number: 001

• Message text: Error while calling the bus. function; &1 was transferred, &2 is expected

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 /PM0/ABP_BCA_MSG001 - Error while calling the bus. function; &1 was transferred, &2 is expected ?

  The SAP error message /PM0/ABP_BCA_MSG001 typically indicates a mismatch between the data being sent to a business function and what is expected by that function. The message format suggests that a certain number of parameters (indicated by &1) were transferred, while a different number (indicated by &2) was expected.
  Cause:
  
  Parameter Mismatch: The most common cause of this error is that the number of parameters being passed to the business function does not match the number of parameters that the function is designed to accept.
  Incorrect Configuration: There may be an issue with the configuration of the business function or the way it is being called.
  Data Type Issues: Sometimes, the data types of the parameters being passed may not match the expected types, leading to this error.
  Version Compatibility: If there are version differences between the calling program and the business function, it may lead to such errors.
  
  Solution:
  
  Check Parameter Count: Review the documentation for the business function to ensure that you are passing the correct number of parameters. Make sure that the parameters you are sending match the expected parameters in both count and type.
  Debugging: Use the SAP debugger to step through the code where the business function is called. This can help identify what parameters are being passed and where the mismatch occurs.
  Review Configuration: Check the configuration settings related to the business function to ensure they are set up correctly.
  Consult Documentation: Look for any relevant SAP notes or documentation that may provide insights into this specific error message.
  Update or Patch: If the issue is related to a known bug, check if there are any updates or patches available for your SAP system that address this issue.
  
  Related Information:
  
  SAP Notes: Search the SAP Support Portal for any notes related to this error message. SAP frequently publishes notes that address specific issues and provide solutions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered the same issue and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SE37 (Function Builder) to check the function module definition.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.