How to fix the Oracle error PLS-00651: implementation type in Aggregate/Table function should be a valid type?

In this post, you’ll learn more about the Oracle ErrorPLS-00651: implementation type in Aggregate/Table function should be a valid type with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00651: implementation type in Aggregate/Table function should be a valid type

Reason for the Error PLS-00651: implementation type in Aggregate/Table function should be a valid type

User tried to use some other database object like a package to define implementation type of an aggregate/table function.

How to fix the Error PLS-00651: implementation type in Aggregate/Table function should be a valid type ?

You can fix this error in Oracle by following the below steps

Use a valid user defined type as implementation type.