Logical system name ABC_XYZ does not match SAP's recommendation
Message no. B2110
Diagnosis
You are using at least one special character in the definition of a logical system.
Procedure
We recommend that you do not use special characters in the definition of a logical system. These characters can cause technical problems in a multilingual environment. Use only the 26 uppercase characters from the English character set and the 10 digits.
To uniquely identify a logical system, we recommend the following structure for ALE scenarios (see SAP Note 606757):
[SYSTEM ID]CLNT[CLIENT]
where [SYSTEM ID] is the three-character name of the SAP system and [CLIENT] is the three digit client.
We cannot guarantee that the special character ‘_’ will not cause problems in future releases.
Reference
606757 – Naming conventions for logical systems