QB Issue Resolution:
You are creating debits and credits. AR is the credit. The .iif works off the SPL line with the negative value for AR. You need to have different Names for the AR TYPE accounts.
And then you still need to use Receive Payment, to apply those payments to the invoices. Imported Payments are NOT applied or linked to anything. You are just creating AR credits.
Resolution for Issue 'Is it possible to import payments from customers to different accounts receivable accounts?' available: Yes (Solved).
Source: Intuit Community forum.
Is it possible to import payments from customers to different accounts receivable accounts?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.Support for Import
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