Placeholders in message &1 are not numbered

What causes this issue?

You created a message with multiple ?<(>&<)>? placeholders.

System Response

The placeholders are not numbered. It is important to number the
placeholders so that the message can be translated in the correct order
in each language.

How to fix this error?

Add the consecutive numbers 1 to 4 to your placeholders.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.