How To Fix MAT_MESSAGES013 - Only one '&1' is allowed.

MAT_MESSAGES013 - Overview

• Message type: E = Error

• Message class: MAT_MESSAGES -

• Message number: 013

• Message text: Only one '&1' is allowed.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MAT_MESSAGES013 - Only one '&1' is allowed. ?

  The SAP error message MAT_MESSAGES013 with the description "Only one '&1' is allowed" typically occurs in the context of material master data management. This error indicates that there is an attempt to create or modify a material master record in a way that violates a business rule or configuration setting that allows only one instance of a specific attribute or characteristic.
  
  Cause:
  The error can arise from several scenarios, including but not limited to:
  
  Duplicate Entries: You may be trying to create or update a material with a characteristic that is supposed to be unique, such as a specific classification or attribute that can only have one value.
  Configuration Settings: The system may be configured to restrict certain attributes to a single entry, and your action is attempting to add more than one.
  Data Inconsistencies: There may be inconsistencies in the data being entered, such as trying to assign multiple values to a field that