How To Fix EAMS_BO503 - Material and Assembly cannot be filled at the same time

SAP Error Message - Details

• Message type: E = Error

• Message class: EAMS_BO - Business Object Layer

• Message number: 503

• Message text: Material and Assembly cannot be filled at the same time

What causes this issue?

You have entered the material and assembly into the object list.

System Response

These material and assembly cannot be together in the same item of the
object list.

How to fix this error?

Correct your entry.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EAMS_BO503 - Material and Assembly cannot be filled at the same time ?

  The SAP error message EAMS_BO503, which states "Material and Assembly cannot be filled at the same time," typically occurs in the context of creating or processing a bill of materials (BOM) or during the creation of a production order or maintenance order in SAP. This error indicates that the system has detected an inconsistency in the data entry where both a material and an assembly are being specified simultaneously, which is not allowed.
  Cause:
  
  Data Entry Error: The user may have inadvertently filled in both the material and assembly fields in a transaction where only one should be specified.
  Configuration Issue: There may be a configuration issue in the system that allows for both fields to be populated when they should be mutually exclusive.
  Process Misunderstanding: The user may not fully understand the process requirements for the transaction they are attempting to execute.
  
  Solution:
  
  Review Input Fields: Check the transaction screen where the error occurred. Ensure that only one of the fields (either Material or Assembly) is filled in, not both. Clear the field that is not needed for the transaction.
  Consult Documentation: Refer to the relevant SAP documentation or user guides for the specific transaction to understand the correct usage of the fields.
  Training: If the issue is recurring, consider providing additional training to users on the specific transaction and its requirements.
  System Configuration: If the error persists and seems to be a system issue, consult with your SAP Basis or configuration team to review the settings related to the transaction and ensure that the system is configured correctly to prevent this error.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to BOM, production orders, or maintenance orders, such as CS01 (Create BOM), CO01 (Create Production Order), or IW31 (Create Maintenance Order).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions for specific scenarios.
  User Forums: Consider searching or posting in SAP community forums or discussion boards for insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the EAMS_BO503 error and proceed with your SAP transactions successfully.