Preceding doc. &1: currency &2 different from &3 in contract account &4

What causes this issue?

If you use reference document &v1& (order), the transaction currency
&v2& is different from transaction currency &v3& in contract account
&v4&.
Since this document is to be billed in <ZH>IS-U</>, the transaction
currency must match the currency stored in the <ZH>contract account</>.
If no currency is stored in the contract account, then the transaction
currency must match the currency of the <ZH>company code</>.


&WARNUNG&
It is essential that you do <ZH>not</> the currency in the contract
account to post the document. This would affect <ZH>billing in IS-U</>.


&SOLUTION&
You have the following alternatives:
<ZH>Post</> the document <ZH>directly</> in the <ZH>FI-CA</> contract
accounts receivable and payable component.
Create the SD billing document using a billing type for which the
billing category ensures that the billing document is transferred
directly to FI-CA (the billing category must not be U). In contract
accounts receivable and payable, the document can be posted in currency
&v2&. If the error occured in the FI/CO interface and an SD billing
document already exists, then this document must be reversed first.
<ZH>Change</> the <ZH>document currency</> in the <ZH>SD order</>
To change the document currency in the order header, you must reverse
the whole process in SD. If the error occured in the FI/CO interface
and an SD document already exists, then this document must be reversed.
This applies to any existing delivery.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

What causes this issue?

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.