Question

How to Resolve PLS 00201 identifier must be declared?

Answer 1

To resolve the 'PLS 00201 identifier must be declared' error in PL/SQL, ensure the identifier is correctly declared, exists in the database, has the necessary permissions, is free of typos, and that any custom PL/SQL types are properly handled.

Step-by-step explanation:

The error PLS 00201 identifier must be declared is typically encountered in Oracle PL/SQL when the PL/SQL compiler comes across an identifier, such as a variable, constant, procedure, or function, that it does not recognize or that has not been properly declared within the scope of the block of code being compiled. To resolve this error, you should check for the following issues:

• Ensure that the identifier has been correctly declared in the PL/SQL block.
• If the identifier refers to a database object like a table or view, verify that it exists in the database and that the user has the appropriate permissions to access it.
• Check for any typos that might have occurred while referencing the identifier.
• If the identifier is a custom PL/SQL type, ensure it's properly declared and compiled in the schema.

Correcting these issues should resolve the error message.