SAP Knowledge Base Article - Public

2779336 - Class Connector Failing or Not Updating Fields or Values


  • Class Connector Not Updating Fields or Values;
  • Class Connector creating a new Class instead of updating an existing one;
  • Class Connector failing as "Cannot specify a NULL Key value for reference entity COL_NUM99_VAL".

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."


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Reproducing the Issue

  • Run Class Connector to create Class, with no value in the Legacy ID;


  • Run Class Connector to populate the Legacy ID in a manually created Class;


Custom Column 99 is not using a unique Value or is not present on the connector input file.


  • The first time the connector creates the offering the system creates the SCHED_ID based on the item id, rev_date and item type.
  • To update the same class via connector this is when it uses its unique Legacy_ID (custom 99) to identify which class to update.
  1. System Admin
  2. Configuration
  3. Entity configuration
  4. Select a record to configure 'Class'
  5. See Legacy ID and add as seen in below image.


  • You should now see this custom column under Classes 
  • Custom Column 99 is used as an unique identifier for the class and it is mandatory when running the connector by any means (update and/or create)
  • If you are updating a Class, you should ensure you have custom column 99 to match input file value, otherwise it will create a new class.
  • You will update input file for COL_NUM99_VAL with recommended alpha-numeric characters instead of numbers.
  • This is to avoid it being similar to Class IDs e.g. "XCW-123"


  • If you have created the Class via the UI, it is not possible to use the Class Connector to populate the legacy ID/ COL_NUM99_VAL.
  • The Legacy ID cannot match any Class IDs or it will not work.


Class Connector, Class, Offering, Connector, Class Update, Connectors, Connector, Custom Columns, COL_NUM99_VAL, Custom Column 99 , KBA , LOD-SF-LMS-CON , Connectors , Problem


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