How To Fix DO842 - Alias name must not be displayed

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message DO842 - Alias name must not be displayed ?

  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 RSD1) and check the alias settings for the InfoObject in question. Ensure that the alias is configured correctly and is not set to be displayed in contexts where it shouldn't be.
  
  
  
  Review Query Design:
  
  If the error occurs in a query, open the query in the Query Designer (transaction code RSRQ) and check the properties of the InfoObject being used. Make sure that the alias is not being selected for display if it is not supposed to be.
  
  
  
  Adjust Data Model:
  
  Review the data model for any inconsistencies or incorrect settings that might be causing the alias to be displayed. This may involve checking the InfoProvider, transformations, and data flows.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP BW you are using. There may be specific guidelines or patches that address this issue.
  
  
  
  Testing:
  
  After making changes, test the query or report again to see if the error persists. If it does, further investigation into the specific configurations may be necessary.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error code or related keywords in the SAP Support Portal.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same problem and can provide insights or solutions.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on InfoObjects, aliases, and query design best practices.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP BW expert for further assistance.