Read request is nested

What does 12359 mean?

A read request was initiated while another read request was already active for the same resource or file_id. This IO_STATUS error indicates an attempt to perform concurrent read operations which is not supported or allowed for the specific resource. The program will abort if the file_id is invalid.

• Program logic error attempting multiple reads on the same file_id concurrently without proper synchronization or completion checks.
• Failure to properly complete or close a previous read request before initiating a new one.
• The file_id used does not correspond to a valid opened file, leading to confusion in state management.

1. 1

   Review KAREL program logic to ensure read requests are handled sequentially for a given file_id and resource.

2. 2

   Verify that previous read operations are fully completed and their results processed before initiating new ones on the same resource.

3. 3

   Use the KAREL command READ file_id(cr) to clear any existing IO_STATUS error condition.