This error appears when the analysis code is set to inactive. Reactivate the analysis code:
On the Debtors or Creditors tab as applicable, click Settings, then click Analysis. All active analysis codes will appear on the right.
To find inactive Analysis codes, click the Quick Search field and enter the analysis code.
Select the relevant analysis code.
Click Edit.
To make an analysis code active, on the Summary tab, select the Active checkbox.
Click Save.