This error will occur when the following criteria have been met:
Dimensions Invoice Register Options for the transaction type (PL Approval, or POP Approval) is set to Specific Type 'n' Approver
The Supplier Account has a Specific IR Approver 'n' set
The Access Readsoft Broker Service which imports Invoices from Access Capture to Dimensions, is passing a Specific IR Approver which is different to the IR Approver set on Supplier
You will know from the Error Message which IR Approver ID that the Access Readsoft Broker Service is importing to Dimensions as it tells you this in the error itself (The approver 'nn')
You should also know from the Invoice which Supplier Account this was sent to.
With that you can then check the IR Approver in Dimensions.
If the IR Approver on the Supplier Account is different to the approver ID from the Error in Access Capture, then you will either need to change the IR Approver on the Supplier in Dimensions. Or change the Invoice Register Approval settings and Access Readsoft Broker Service files accordingly.
If you need assistance with doing this or for further advice, please see the following Get support in Access Capture and reference the title of this article.