SAP Knowledge Base Article - Public

3436109 - Error Is Presented "Technical error: Cannot read properties of null (reading 'appearanceTargetKey')."

Symptom

Error is presented "Technical error: Cannot read properties of null (reading 'appearanceTargetKey')."

Environment

SAP Cloud for Customer.

Reproducing the Issue

An example of scenario will be as follows (contains illustrative objects):

  1. Open 'Utilities' Work center.
  2. Go to 'Contract Account' view.
  3. Open an entry 'X' and then try to 'Add' mashup to its header.
  4. Error is presented "Technical error: Cannot read properties of null (reading 'appearanceTargetKey')."

Cause

This issue indicates that the mashup is already added to the screen, hence you will get this error.

You can check this by analyzing its 'Usage', there the path screen will be confirmed. 

Resolution

To be certain, clean the cache before proceeding and, with customer authorization, it can be removed by deleting the AddMashup CT for the mashup removal.

Keywords

Parameter; add; mashup; screen; blank; screen; Technical; error; read; properties; null; reading; appearanceTargetKey. , KBA , AP-RC-GEN-MSH , Mashups , How To

Product

SAP Cloud for Customer core applications 2402