How To Fix GH306 - Field & can only be used in the second object table

SAP Error Message - Details

• Message type: E = Error

• Message class: GH - Help functions and tools in FI-SL

• Message number: 306

• Message text: Field & can only be used in the second object table

What causes this issue?

You want to include field &V1& in the definition of the first object
table &V2&. This is not allowed. You can only use field &V1& in the
second object table.

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?

Note the above requirements.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GH306 - Field & can only be used in the second object table ?

  The SAP error message GH306, which states "Field & can only be used in the second object table," typically occurs in the context of SAP's data modeling or when working with certain types of data structures, such as InfoObjects in SAP BW (Business Warehouse) or when defining data models in ABAP.
  Cause:
  This error usually arises when you are trying to use a field in a context where it is not allowed. Specifically, it indicates that the field you are trying to reference is only valid in the second object table of a data structure or model. This can happen due to:
  
  Incorrect Field Usage: The field is being used in a context (like a join or a query) where it is not applicable.
  Modeling Errors: There may be a misconfiguration in the data model or InfoObject definition.
  Data Source Issues: The data source may not be set up correctly, leading to the field being referenced incorrectly.
  
  Solution:
  To resolve the GH306 error, you can take the following steps:
  
  
  Check Field Context: Review the context in which you are trying to use the field. Ensure that it is being used in the correct object table as specified by the SAP documentation or data model design.
  
  
  Review Data Model: Go through the data model or InfoObject definition to ensure that the field is correctly defined and that it is being used in the appropriate context.
  
  
  Adjust Queries or Joins: If you are working with queries or joins, make sure that the field is being referenced in the correct part of the query or join condition.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on the field and its usage. This can provide insights into the correct context for the field.
  
  
  Testing: After making adjustments, test the changes to ensure that the error is resolved and that the data model or query behaves as expected.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if others have encountered the same issue and what solutions they found effective.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP BW or the specific module you are working with to better understand the data modeling principles.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or support team for further assistance.