No errors found

What causes this issue?

The syntax check of the template columns you filled contains no errors.

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?

If you are in mode to Create or Change, you can save your template even
when it is not yet completely specified. It must simply have no syntax
errors.

Error message extract from SAP system. Copyright SAP SE.