SAP Knowledge Base Article - Public

3047510 - Process Communication Error "Tax calculation failed; trigger a calculation again" in Purchase Order

Symptom

You have a Purchase Order ABC (ABC refers to the Purchase Order ID) with a Process Communication Error, and the Main Error is "Tax calculation failed; trigger a calculation again".

Environment

SAP Business ByDesign

Reproducing the Issue

  1. Go to the Purchase Requests and Orders work center.
  2. Go to the Purchase Orders view.
  3. Search and open Purchase Order ABC.
  4. Click on View All button.
  5. Go to the Document Flow tab.

Here you can see a red icon indicating that there is a Process Communication Error assigned to this Purchase Order.

  1. Go to the Application and User Management work center.
  2. Go to the Process Communication Errors view.
  3. Select, from the dropdown menu, Open Errors with Incidents.
  4. Select the line where Receiving Document ID is ABC.

You can see here that the Main Error is "Tax calculation failed; trigger a calculation again"

Cause

The system is not able to update the document because there is an Exchange Rate error in the Purchase Order ABC.

  1. Go to the Purchase Requests and Orders work center.
  2. Go to the Purchase Orders view.
  3. Search and open Purchase Order ABC.
  4. Click on View All button.
  5. Click on Check button.

The system will trigger an error: "Exchange rate X/Y on DD.MM.YYYY missing for currency conversion" (where X refers to the Supplier's currency, Y refers to the Company's currency, and DD.MM.YYY refers to the creation date of the Purchase Order ABC).

Resolution

To solve this issue, you need to maintain an Exchange Rate between the currencies X and Y. The steps to maintain the Exchange Rate can be seen in the KBA 2370139 - Error: Exchange Rate X/Y on date DD.MM.YYYY Missing for Currency Conversion.

See Also

2370139 - Error: Exchange Rate X/Y on date DD.MM.YYYY Missing for Currency Conversion.

Keywords

Process Communication Error, Purchase Order, Tax calculation, tax, failed, calculation, trigger. , KBA , AP-POP-PO , Purchase Order , How To

Product

SAP Business ByDesign all versions