How To Fix /MVA/AMC_BM_MSG879 - B/M &1: Shift of start to &2 is outside the permitted period

/MVA/AMC_BM_MSG879 - Overview

• Message type: E = Error

• Message class: /MVA/AMC_BM_MSG -

• Message number: 879

• Message text: B/M &1: Shift of start to &2 is outside the permitted period

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /MVA/AMC_BM_MSG879 - B/M &1: Shift of start to &2 is outside the permitted period ?

  The SAP error message /MVA/AMC_BM_MSG879 B/M &1: Shift of start to &2 is outside the permitted period typically occurs in the context of the Advanced Planning and Optimization (APO) module, particularly when dealing with planning and scheduling activities. This error indicates that there is an attempt to shift a planning period or a start date to a time that is not allowed based on the configuration or settings in the system.
  
  Cause:
  
  Date Constraints: The start date you are trying to shift to (&2) is outside the allowed planning horizon or period defined in the system.
  Configuration Settings: The planning parameters or settings may not allow for shifts beyond a certain limit, which could be defined in the planning book or in the master data.
  Locked Periods: The period you are trying to shift to may be locked for planning or may not be open for changes.
  Data Integrity Issues: There may be inconsistencies in