3690869 - Error "Accounting Interface: Balance in Transaction Currency" in Post Outgoing Payments app

When attempting to post an outgoing payment to a vendor using the "Post Outgoing Payments" app, the following error message is raised:
"Accounting Interface: Balance in Transaction Currency".

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

SAP S/4HANA Cloud Public Edition

1. Navigate to the Post Outgoing Payments app.
2. Enter the following selection data:
   • Company code
   • Posting date
   • House Bank/Account
   • G/L Account
   • Amount
   • Account type
   • Account ID
3. Click on Post.
4. Error "Accounting Interface: Balance in Transaction Currency is raised".

In journal entries selected for the payment, W/Tax Amt/Base was entered manually. It is not possible to change the withholding tax base amount that is already posted.

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The vendor invoices selected for payment contain withholding tax (WHT) data manually entered during original posting.

In such cases:

• The WHT base or amount does not match system-calculated values, causing an inconsistency.
• This inconsistency leads to a non-zero balance in transaction currency when the payment document attempts to post.
• Since FI/CO interface requires zero balance per logical transaction, message RW033 is triggered.

Once manually entered withholding tax has been posted in the invoice, the system does not allow changes to the WHT base or amount.

1. Reverse the invoices that contain manually entered WHT amounts or incorrect WHT base values.
2. If the invoices were entered manually:
   Repost them with correct WHT code and allow the system to calculate the WHT automatically (avoid manual override)
3. If the invoices were created via migration:
   Reload the data using the appropriate migration template, ensuring all WHT fields are correctly populated.

Note: Always test reversals and reposting activities in a test or quality system before applying in production.

error rw033, accounting interface, balance in transaction currency, post outgoing payments, withholding tax base, journal entries, reversal of invoices, data migration template, transaction currency balance, sap s/4hana cloud , KBA , FI-FIO-AP-TRA-2CL , Transaction Apps: Public Cloud , Problem