SAP Message 30659 - &1 without valid change indicator were ignored

Diagnosis
You have entered an invalid change ID. These lines have been ignored.
The change ID is an indicator showing whether a text is to be added,changed, or deleted.
The field can have the following values:
"I" to add a short text (Insert)
"U" to change a short text (Update)
"D" to delete a short text (Delete)

Procedure
Enter "U", "I", or "D".