How To Fix /SCWM/HU_WM171 - Change in base unit of measure for quantity possible is not permitted

/SCWM/HU_WM171 - Overview

• Message type: E = Error

• Message class: /SCWM/HU_WM -

• Message number: 171

• Message text: Change in base unit of measure for quantity possible is not permitted

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 /SCWM/HU_WM171 - Change in base unit of measure for quantity possible is not permitted ?

  The SAP error message /SCWM/HU_WM171 indicates that there is an issue with changing the base unit of measure (UoM) for a quantity in the context of handling units (HUs) in the Extended Warehouse Management (EWM) module. This error typically arises when there is an attempt to modify the UoM of a handling unit that is not allowed due to system constraints or configuration settings.
  
  Cause:
  
  Inconsistent UoM Settings: The base unit of measure for the material may be set in a way that does not allow changes. For example, if the handling unit is already created with a specific UoM, changing it might violate the system's integrity rules.
  Stock Type Restrictions: The stock type (e.g., unrestricted, blocked) may have restrictions on changing the UoM.
  Configuration Settings: The system configuration may not allow changes to the UoM for certain materials or handling units.
  Open Transactions: There may be open transactions or processes that are dependent on