How To Fix DO842 - Alias name must not be displayed

DO842 - Overview

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 842

• Message text: Alias name must not be displayed

What causes this issue?

You have entered an alias name. This is allowed only if the following
properties are maintained:
The table type is a HASHED TABLE or SORTED TABLE
The key definition is 'Row Type' or 'User-Defined'
The uniqueness must be specified (UNIQUE for HASHED und
NON-UNIQUE/UNIQUE for SORTED).

System Response

The table type is not activated.

How to fix this error?

Give the table type the specified properties or delete the alias name.
Afterwards, activate the table type once again.

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.

DO842 - Details

• The SAP error message DO842 ("Alias name must not be displayed") typically occurs in the context of data extraction or reporting, particularly when dealing with InfoObjects in SAP BW (Business Warehouse) or when using certain reporting tools. This error indicates that there is an issue with the way an alias name is being handled in the system.
  
  Cause:
  
  Alias Configuration: The error often arises when an InfoObject has been configured with an alias that is not set up correctly or is being referenced in a way that is not allowed.
  Data Model Issues: There may be inconsistencies in the data model, such as incorrect relationships or settings that lead to the alias being displayed when it shouldn't be.
  Query Design: If you are using a query that references an InfoObject with an alias, the query might be incorrectly set up to display the alias name.
  
  
  Solution:
  
  
  Check Alias Settings: 
  
  Go to the InfoObject maintenance (transaction code