How To Fix AQ194 - Unable to link & as an additional field

AQ194 - Overview

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 194

• Message text: Unable to link & as an additional field

What causes this issue?

You attempted to link a table to a functional area, but the table
cannot be read with SELECT. Such a table cannot be linked.

System Response

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

How to fix this error?

If you would like to link a structure choose the option 'additional
structure'. You must then store coding for this structure that fills
the components of the stucture (see additional fields)

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ194 - Unable to link & as an additional field ?

  The SAP error message AQ194, which states "Unable to link & as an additional field," typically occurs in the context of data modeling or configuration within SAP systems, particularly when working with InfoObjects, DataSources, or other data-related components in SAP BW (Business Warehouse) or SAP HANA.
  
  Cause:
  
  Field Compatibility: The field you are trying to link may not be compatible with the existing structure or data type of the target object.
  Field Already Exists: The field you are trying to add may already exist in the target structure, leading to a conflict.
  Data Source Issues: There may be issues with the DataSource or InfoObject from which you are trying to pull the additional field.
  Authorization Issues: Lack of proper authorizations to modify the data model or InfoObject can also lead to this error.
  Technical Settings: The technical settings of the InfoObject or DataSource may not allow for additional fields to be linked.
  
  
  Solution:
  
  Check Field Compatibility: Ensure that