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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPN01034 - MPN & should not contain the delimiter & ?

  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 material numbers, descriptions, and any other relevant fields.
  Data Correction: If you find the "&" character, remove it and replace it with a valid character or format as required by your business rules.
  Validation Rules: Implement validation rules in your data entry processes to prevent the inclusion of invalid characters in the future.
  Data Import Review: If the error arises during a data import, review the source data for any invalid characters and clean it up before importing it into SAP.
  
  Related Information:
  
  SAP Documentation: Refer to SAP's official documentation for more details on the specific transaction or module you are working with. This can provide insights into valid formats and constraints.
  Transaction Codes: Depending on where the error occurs, you may want to check transaction codes related to material master data (e.g., MM01, MM02).
  User Exits or BAdIs: If you are using custom developments, check for any user exits or BAdIs that might be affecting the data validation process.
  SAP Notes: Search for relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the MPN01034 error and ensure that your data adheres to the required format.