How To Fix VW291 - Single-column view not possible (see long text).

SAP Error Message - Details

• Message type: E = Error

• Message class: VW - Shipment Processing Output

• Message number: 291

• Message text: Single-column view not possible (see long text).

What causes this issue?

When you enter a stage, you cannot switch to single-column entry. This
may have the following reasons:
There are stages with stage types 2 (load transfer) or 3 (border) for
which you cannot use single-column entry.
There are differences between the destination point of a stage and the
starting point of the next stage. However, single-column entry requires
that the destination point of a stage is the same as the starting point
of the next stage.

System Response

You cannot switch to single-column entry.

How to fix this error?

Use double-column entry, delete the stages which do not have type 1
(shipment) or define the starting point as identical to the destination
point of the previous stage.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VW291 - Single-column view not possible (see long text). ?

  The SAP error message VW291, which states "Single-column view not possible (see long text)," typically occurs in the context of SAP's reporting or data retrieval functionalities, particularly when dealing with queries or reports that are expected to return a single-column result set but instead return multiple columns or an incompatible structure.
  Cause:
  
  Multiple Columns Returned: The most common cause of this error is that the query or report is attempting to return multiple columns when a single-column output is expected.
  Incorrect Query Design: The query may be incorrectly designed, leading to a situation where it does not conform to the expected output format.
  Data Structure Issues: There may be issues with the underlying data structure or the way the data is being accessed, such as joins that result in multiple columns being selected.
  View Definition: If you are using a database view, it may not be defined correctly to return a single column.
  
  Solution:
  
  Check Query/Report Design: Review the query or report design to ensure that it is set up to return only a single column. If multiple columns are being selected, modify the query to select only the necessary column.
  Modify Data Retrieval Logic: If you are using a custom program or ABAP report, check the logic to ensure that it is fetching data correctly and only retrieving the required column.
  Review View Definitions: If the error is related to a database view, check the view definition to ensure it is designed to return a single column. You may need to create a new view or modify the existing one.
  Use Aggregation Functions: If applicable, consider using aggregation functions (like SUM, COUNT, etc.) to condense multiple rows into a single output.
  Consult Documentation: Refer to SAP documentation or the long text associated with the error message for additional context and guidance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like SE11 for Data Dictionary, SE80 for Object Navigator) that can help you analyze and modify database views or queries.
  Debugging: If you have access to debugging tools, consider debugging the program or report to identify where the error is occurring and what data is being processed.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.