3454048 - It is not possible to replace data source for import job to file server in SAP Analytics Cloud (SAC)

• Error happens when replacing data source for import job:
  "Job Name failed to refresh
  Data mapping ended unexpectedly. "
  
  "Job Name failed to refresh
  There are mapping restrictions that need to be fixed. Edit your import job to resolve them."

• SAP Analytics Cloud 2024.2.18 (SAC)

1. Open model import model A which is connecting to file server. 
2. Go to Data Management, Edit import job AA, Click on Edit-->Replace Data Source.
3. Select File (Local File or File Server), Choose File from File server and select file server connection .
4. Search File which need to replace and select the file, click on Import.
5. Got message "Data source from XX has been replaced successfully. ", click on Review Import.
   ===>Notice that the mapping page cannot be displayed, the error below happens:
   JobAA failed to refresh
   "Data mapping ended unexpectedly" or "There are mapping restrictions that need to be fixed. Edit your import job to resolve them."

• The issue is caused by JSON parameter limit error.

• If the user is adding a lot of data transformations during the import job creation, the data import job definition can exceed the storage limit causing the import job to fail. The solution is to send large data import job definitions in chunks to ensure the storage limit is not exceeded
• The issue is planned to be fixed in 2024.21 version.

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SAC, import, file, server, job, edit, replace, data, source, mapping, restrictions, failed, refresh , KBA , LOD-ANA-AQU , Import Data Connections (Acquiring Data) , Problem