Transaction no. & created (documents see Display -> Transaction)

What causes this issue?

You have chosen the function "Post". As you have been working in
different company codes, several documents must be created.

System Response

The system has created a posting document with a separate number for
each company code. The different document numbers are grouped under the
specified transaction number.

How to fix this error?

If you want to display the documents, choose "Document --> Display -->
Transaction". Choose "Goto --> Associated documents", to generate a
list of individual document numbers from which you can make a
selection.

Error message extract from SAP system. Copyright SAP SE.