How To Fix UA_SM1019 - Type name &1 contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: UA_SM1 - Structure Maintenance

• Message number: 019

• Message text: Type name &1 contains invalid characters

What causes this issue?

The type name you selected contains at least one invalid character. For
technical reasons, type names can only contain characters from the
following groups:
Letters (A-Z)
Digits (0-9) and
Special characters: Underscore "_" and slash "/".

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the type names so that all characters are contained in the
quantity of valid characters.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.