How To Fix J1B_NFE521 - Material no. &1 used by vendor &2 is mapped to ERP materials &3 and &4

J1B_NFE521 - Overview

• Message type: E = Error

• Message class: J1B_NFE - Message class for NF-e

• Message number: 521

• Message text: Material no. &1 used by vendor &2 is mapped to ERP materials &3 and &4

What causes this issue?

For this vendor the same vendor material number is assigned to more than
one ERP material.

System Response

The vendor material number cannot be uniquely mapped to an ERP material
number.

How to fix this error?

Use the <ZH>ME12</> transaction to assign unique vendor material numbers
for these ERP materials in the info records for this vendor and these
materials.

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 J1B_NFE521 - Material no. &1 used by vendor &2 is mapped to ERP materials &3 and &4 ?

  The SAP error message J1B_NFE521 typically occurs in the context of Brazil's Nota Fiscal Eletrônica (NF-e) process, which is used for electronic invoicing. This specific error indicates that the material number being used by a vendor is mapped to multiple ERP materials, which can lead to confusion in the invoicing process.
  
  Cause:
  The error arises when:
  
  A vendor is associated with a material that has multiple mappings in the ERP system.
  The system cannot determine which material to use for the NF-e because there are conflicting entries.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Material Mapping:
  
  Go to the material master data for the materials mentioned in the error message.
  Verify the mapping of the vendor to the materials. Ensure that each vendor is only mapped to one material for the specific context of the NF-e.
  
  
  
  Adjust Vendor-Material Relationships:
  
  If a vendor is incorrectly mapped to multiple materials, you may need to adjust the vendor-material relationships