How To Fix MM134 - A will be entered where you have not specified a preference indicator

MM134 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 134

• Message text: A will be entered where you have not specified a preference indicator

What causes this issue?

You have maintained customs tariff preference data, but have not
specified a preference indicator for each customs area.

System Response

The system will automatically enter "A" as the preference indicator.

How to fix this error?

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.

MM134 - Details

• The SAP error message MM134 typically occurs in the Materials Management (MM) module when you are trying to create or change a material master record, and the system requires a preference indicator for a specific field, but none has been specified. This error is often related to the handling of materials that have multiple sources of supply or procurement types.
  
  Cause:
  The error message MM134 indicates that the system expects a preference indicator to be specified for a material, but it has not been provided. This can happen in scenarios such as:
  
  Material Master Data: When creating or updating a material master record, especially in the purchasing or procurement views, the system may require a preference indicator to determine how to prioritize suppliers or procurement sources.
  Configuration Settings: The configuration settings in the system may require a preference indicator for certain materials or purchasing conditions, and if this is not set, the error will