To create a mapping, use the development system (3SL) or Q system (2SL) in 'Renumber G/L Accounts

[SAPSupport]

We are trying to enter Renumber G/L accounts customizing activity, but get the following error: 

To create a mapping, use the development system (3SL) or Q system (2SL).

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[SAPSupport · Accepted solution]

This issue is caused because Current system type is not supported for renumbering the G/L accounts.

Based on the landscapes, you can find the right system to renumber the G/L accounts.

1. For the 2SL landscape, use the Quality(TEST) system.
2. For the 3SL landscape, use the Development Customizing client.

Note: Starter or Partner Demo Customizing/Developments Tenants are not supported for G/L account numbering.

Kindly check the KBA 3289450 for more information.