3451607 - The mapping step keeps loading when exporting data from SAC to BPC, BW or S/4 using the legacy export

The legacy export option is used to export data from SAC to another system, such as S/4HANA, BPC, BW or BW/4HANA.

However, the dimension mapping dialog keeps loading and does not show.

In the Network trace, there is a red request /sap/fpa/services/rest/epm/error?tenant=B with the payload as belw:

• code: "GENERIC_ERROR"
  component: ""
  message: "[Application Error]:Cannot read properties of undefined (reading 'toUpperCase')"
  previous: null
  severity: 0
  stack: "TypeError: Cannot read properties of undefined (reading 'toUpperCase') at U (https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/app.chunk.dm-chunk.3341fcdac860d274fb3f.js:144:2503040)\n at https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/app.chunk.135.15827808407539897f39.js:9:1639255\n at https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/115.main.1a5a73070eb4d4a4f7c8.js:1:532104\n at Object.<anonymous> (https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/115.main.1a5a73070eb4d4a4f7c8.js:1:512449)\n at u (https://sapui5.hana.ondemand.com/1.108.20/resources/sap-ui-core.js:1027:25639)\n at Object.fireWith [as resolveWith] (https://sapui5.hana.ondemand.com/1.108.20/resources/sap-ui-core.js:1027:26474)\n at k (https://sapui5.hana.ondemand.com/1.108.20/resources/sap-ui-core.js:1027:84115)\n at f.<anonymous> (https://sapui5.hana.ondemand.com/1.108.20/resources/sap-ui-core.js:1027:86801)\n at f.<anonymous> (https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/app.chunk.main-chunk.a182d4803f90da7f629d.js:15:35412)\n at XMLHttpRequest.n (https://assets.sapanalytics.cloud/production/uiAssets-2024.2.10/uiAssets/app.chunk.main-chunk.a182d4803f90da7f629d.js:13:17065)"

• SAP Analytics Cloud (Enterprise)

1. Open model and go to "Data Management"
2. Select "Export Data".
3. Select the export type.
4. Select the connection.
5. Choose the target fields.
6. After clicking on "Next", the system enters an endless loop.

This SAC model contains the single column dimension.

** For a single column dimension, in the type column of the dimension in the dimension list, it shows the text 'Dimension' instead of the dimension table.

Generate dimension tables for all the dimensions of this SAC model.
See Add Master Data to Your Model Using Dimension Tables.

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