How To Fix MIMA166 - You cannot change field &1; change is ignored

MIMA166 - Overview

• Message type: E = Error

• Message class: MIMA - Messages for Master Data Admin. Insurance Object

• Message number: 166

• Message text: You cannot change field &1; change is ignored

What causes this issue?

You tried to change the value of field &V1&. The system does not allow
this.

System Response

The system ignores the change. Original value &V2&is kept.

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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

MIMA166 - Details

• The SAP error message MIMA166, which states "You cannot change field &1; change is ignored," typically occurs in the context of material master data or similar data structures where certain fields are not allowed to be modified under specific conditions. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Field Restrictions: The field you are trying to change is either locked or restricted due to the current status of the material or the data record. For example, certain fields may be non-editable once the material has been released or if it is in a specific status.
  User Authorizations: The user may not have the necessary authorizations to change the field in question.
  Data Consistency: The system may prevent changes to maintain data integrity and consistency, especially if the field is linked to other processes or modules.
  Field Characteristics: Some fields are defined as "display only" in the configuration, meaning they cannot be