Exchange rate type not maintained for program &1/&2.

What causes this issue?

There was supposed to be a translation of an amount in currency &V3& to
currency &V4&. However, the required exchange rate type is not
maintained in the program type of investment program &V1&/&V2&.

System Response

The data is not updated.

How to fix this error?

Maintain the exchange rate type in the program type of investment
program &V1&/&V2& in Customizing.

Error message extract from SAP system. Copyright SAP SE.