3819224 - Why am I getting a missing account code error when trying to submit an invoice?

Error received when selecting expense type: "The expense type selected for the line item does not have an account code configured. This expense type cannot be used until your system administrator adds an account code for it.  Why are we getting this and how can we fix it?

I would like to add an account code to my expense type. , KBA , CON-CA-TLS-IEM-SAE , Standard Accounting Extract , CON-EXP-ADM-EXT , Expense Types , Problem