Diagnosis
You may have entered an incorrect column name (no special characterspermitted) for the column heading in the display PRTs in Operation:Display and Replace.

System Response
The system cannot display the data that has been determined.

Procedure
Check the text symbols 101 to 125 in the report Z_POOL_REPLACE. Thesenames should not contain any special characters (special characters mayhave been used in editing or when the heading was created).