# 'Internal error. Error code 9999' when running job on IBMQ

I'm trying to run a series of circuits in a job and I keep getting this error message which I haven't been able to find the meaning of anywhere in qiskit's documentation, online, etc. The job appears to run for 15 minutes and only then does an error appear... Anyone have any clue as to what this could be? The job consists of batches of circuits where each batch is just a certain circuit repeated a different number of times (before measurement), so I don't see any obvious reason why the circuits from one batch work fine but not from another.

• If you're on Slack, we can talk more about this error by DM if you want, my name there is Léna Pérennès, display name Léna :)
– Lena
Dec 6, 2021 at 16:10

However, for 9999, the answer is not very satisfying:
Once there, checkout out the channel #ibm-q-systems.