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

B1803 - Overview

• 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.

B1803 - Details

• 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