ADB8021E An attempt was made to add a primary or unique constraint to the `table_name` table, but a constraint with the same name already exists for this table.

ExplanationAn error occurred while a primary or unique constraint
was being added to a table.

System action
Processing stops.

User responseEnsure that the table and the constraint to be added
are specified correctly, correct the relevant statements, and try
again.  Details about the object that caused the error are provided
in message ADB8057I. 

ADB8021E An attempt was made to add a primary or unique constraint to the table_name table, but a constraint with the same name already exists for this table.

Explanation

System action

User response

ADB8021E An attempt was made to add a primary or unique constraint to the `table_name` table, but a constraint with the same name already exists for this table.