3194501 - New Manual Tax Entry: Extension Field Creation Not Possible

You are trying to add an extension field in New Manual Tax Entry screen -> Account Assignment section, however, system throws a warning message for Business Context /ISCB/CODING_BLOCK_SUPPL - ROOT.

SAP Business ByDesign

1. Go to the Tax Management work center.
2. Go to the Manual Tax Entries view.
3. Click New -> Tax Entry.
4. Click the avatar icon on top of the screen (right-hand side) -> Key User Settings -> Start Adaptation Mode.
5. Select Account Assignment UI Element, click the Add icon ("+") and click Extension Field (notice that Selected Business Context is /ISCB/CODING_BLOCK_SUPPL - ROOT).
6. Click Create New Field.
7. Enter Field Label and other mandatory fields.
8. Click Save
9. Warning message is thrown:

"Field creation in business context Coding Block no longer supported"

Extension field creation in New Manual Tax Entry screen -> Account Assignment section is not supported even though the /ISCB/CODING_BLOCK_SUPPL Business Object is PSM Released and Public Write Access is granted.

 extension field; /ISCB/CODING_BLOCK_SUPPL; Manual Tax Entry; Account Assignment; business context , KBA , SRD-FIN-TAX , Tax Management , How To