How To Fix B1803 - No function module has been assigned to the business object type &

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 803

• Message text: No function module has been assigned to the business object type &

What causes this issue?

The function module has not been assigned to business object &v1& in
the distribution model. The function module name is required to
determine the receiver of dependent message types.

How to fix this error?

Assign the name of a function module to the business object in the
distribution model. Using these names the values of filter objects in
the master record of the object can be read.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1803 - No function module has been assigned to the business object type & ?

  The SAP error message B1803 indicates that there is no function module assigned to a specific business object type. This typically occurs in the context of Business Object Processing (BOP) in SAP, where certain business objects are expected to have associated function modules for processing.
  Cause:
  
  Missing Function Module: The primary cause of this error is that the business object type in question does not have a function module assigned to it. This can happen if the business object was not properly configured or if the necessary function module was not created or linked.
  Configuration Issues: There may be issues in the configuration of the business object type within the SAP system, leading to the absence of the required function module.
  Transport Issues: If the business object type was transported from another system, the function module may not have been included in the transport request.
  
  Solution:
  
  
  Assign a Function Module:
  
  Go to transaction SWO1 (Business Object Builder).
  Find the business object type that is causing the error.
  Check if a function module is assigned. If not, you will need to create or assign an appropriate function module that handles the processing for this business object.
  If you need to create a new function module, you can do so using transaction SE37 (Function Module Builder).
  
  
  
  Check Configuration:
  
  Ensure that the business object type is correctly configured in the system. This may involve checking the settings in transaction SWO2 (Business Object Type Maintenance) to ensure that all necessary components are in place.
  
  
  
  Transport Check:
  
  If the business object type was recently transported, verify that the transport request included all necessary components, including the function module. If not, you may need to transport the missing function module separately.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific business object type you are working with. There may be specific instructions or known issues that can help resolve the problem.
  
  
  
  Testing:
  
  After making the necessary changes, test the business object processing to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Business Object Types: These are used in SAP to represent various business entities and processes. Each business object can have associated methods (function modules) that define how to interact with it.
  Function Modules: These are reusable pieces of code in SAP that can be called from various programs and processes. They are essential for implementing the logic associated with business objects.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on configuring business objects and function modules.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP Basis or ABAP developer for further assistance.