How To Fix MG178 - Period indicator &1 must not be used together with MRP type &2

MG178 - Overview

• Message type: E = Error

• Message class: MG - Batch input: material master

• Message number: 178

• Message text: Period indicator &1 must not be used together with MRP type &2

What causes this issue?

You have changed the period indicator or the MRP type. The combination
of period indicator &v1& together with MRP type &v2& must not be used
since for MRP type &v2& functionality 'Material Doc.' is switched on.
This setting is not supported.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the settings. Otherwise the determination of consumption values
would not be correct.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MG178 - Period indicator &1 must not be used together with MRP type &2 ?

  The SAP error message MG178 indicates a conflict between the period indicator and the MRP (Material Requirements Planning) type assigned to a material. This error typically arises when the system detects that the combination of the specified period indicator and MRP type is not valid according to the configuration settings in SAP.
  
  Cause:
  
  Invalid Combination: The period indicator (e.g., weekly, monthly) you are trying to use is not compatible with the specified MRP type (e.g., MRP type 'PD' for MRP, 'VB' for consumption-based planning, etc.). Each MRP type has specific rules regarding which period indicators can be used.
  Configuration Settings: The settings in the material master or MRP configuration may not allow the combination you are trying to use. This can be due to standard SAP settings or custom configurations made by your organization.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the MRP views.
  Verify the MRP type