Originally posted by **moPellowe** June 7, 2024
I get the following error when I set up my PI with a single PIParameter object for two simulations. However, if I split it up into two PIParameter objects, then there is no error when I define the piTask.
![image](https://github.com/Open-Systems-Pharmacology/Forum/assets/57540473/abf078cc-4a7b-46a9-87b8-6a363cb18fca)
Code:
![image](https://github.com/Open-Systems-Pharmacology/Forum/assets/57540473/f0c7dc44-6ee4-4779-bc5c-b3452e6b7a91)
![image](https://github.com/Open-Systems-Pharmacology/Forum/assets/57540473/b773f864-8871-46b3-8404-d746d04e56ea)
I don't understand why there would be a simulation ID problem only in the combined PIParameter case and not when they are split up. How can I resolve this "Mismatch or missing ID" error?
(previously posted here https://github.com/Open-Systems-Pharmacology/OSPSuite.ParameterIdentification/discussions/135#discussion-6787833)
Discussed in https://github.com/Open-Systems-Pharmacology/OSPSuite.ParameterIdentification/discussions/136