Try running check links on sales > receivables open and history, if it doesn’t fix:
Reverse one of the journal entries
- Financial > Transactions > General
o To find Journal Entry number use the audit trail in CM20300 / origntsrc in GL20000 table
- Select * from CM20300 where RCPTNMBR = 'PMT-16-000254812'
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- Select * from GL20000 where orgntsrc = 'RMCSH00037908'
Delete it from CM20300 table
Delete CM20300 where RCPTNMBR = 'PMT-16-000254812' AND DEX_ROW_ID = '467903'
Should be fixed now