How To Fix EWA177 - The field to be deleted (&2) is required as the unit of quantity field &1

SAP Error Message - Details

• Message type: E = Error

• Message class: EWA - IS-U-WA: Waste Management

• Message number: 177

• Message text: The field to be deleted (&2) is required as the unit of quantity field &1

What causes this issue?

You cannot delete field &v2& (unit of volume/measurement) as it is
required for field &v1&. Fields &v1& and &v2& can only be deleted
together.

System Response

The system did not save the settings.

How to fix this error?

Delete field &v1&.
Save the data.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EWA177 - The field to be deleted (&2) is required as the unit of quantity field &1 ?

  The SAP error message EWA177 indicates that there is an attempt to delete a field that is required for the unit of quantity in a specific context. This typically occurs in scenarios where certain fields are mandatory for the proper functioning of the system, such as in material master records, sales orders, or other transactional data.
  Cause:
  The error arises when:
  
  A user tries to delete a field (e.g., a unit of measure or quantity field) that is essential for the operation of the system.
  The field being deleted is marked as required in the configuration or data model, meaning that it cannot be left empty or removed without causing issues in data integrity or processing.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Field Requirements: Review the configuration settings for the relevant data model or transaction. Identify which fields are marked as required and ensure that you are not attempting to delete any of these fields.
  
  
  Data Integrity: Ensure that the data integrity is maintained. If the field is necessary for the unit of quantity, it should not be deleted. Instead, if you need to change the field, consider modifying it rather than deleting it.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for the specific module you are working with. This can provide insights into which fields are mandatory and why.
  
  
  User Authorization: Ensure that you have the necessary authorizations to make changes to the fields in question. Sometimes, restrictions may be in place that prevent certain actions.
  
  
  Contact Support: If you are unsure about the implications of deleting the field or if the error persists, consider reaching out to your SAP support team or consulting with an SAP expert.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be working within specific transaction codes (e.g., MM01 for material master, VA01 for sales orders) where this error can occur.
  Field Status Groups: In the context of financial transactions, field status groups can dictate which fields are required, optional, or suppressed. Review these settings if applicable.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling field requirements.
  
  By following these steps, you should be able to address the EWA177 error effectively.