How To Fix MPN01034 - MPN & should not contain the delimiter &

MPN01034 - Overview

• Message type: E = Error

• Message class: MPN01 - MPN Message: Material Master / customizing

• Message number: 034

• Message text: MPN & should not contain the delimiter &

What causes this issue?

You have entered an MPN which contains the conversion exit delimiter
indicator.

System Response

If conversion exit to display MPNs is activated in customizing, the
delimiter stored there will also be used to separate the MPN and the
external manufacturer from each other. This separation will not work if
the delimiter indicator is already used in the MPN.

How to fix this error?

Change the MPN field in the material master.

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.

MPN01034 - Details

• The SAP error message MPN01034 indicates that there is an issue with the format of a material number or a related field in the context of a material master or a similar transaction. Specifically, the error states that the field should not contain the delimiter "&". This typically occurs when the system encounters an unexpected character in a field that is expected to follow a certain format.
  
  Cause:
  
  Invalid Characters: The presence of the "&" character in a field that is not allowed to contain it. This could be in the material number, description, or any other related field.
  Data Entry Error: A user may have inadvertently included the "&" character while entering data.
  Data Import Issues: If data is being imported from an external source, the source data may contain invalid characters.
  
  
  Solution:
  
  Check Input Fields: Review the fields where the error is occurring. Ensure that none of them contain the "&" character. This includes