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 this error will occur.

Check this by analyzing its 'Usage'; there, the path screen will be confirmed.

Resolution

First clean the memory cache and check the results.
Then, it can be removed by deleting the AddMashup change transaction 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