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):
- Open 'Utilities' Work center.
- Go to 'Contract Account' view.
- Open an entry 'X' and then try to 'Add' mashup to its header.
- 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