The SAP standard system includes scenario SR31 for the request of an adjustment posting.
Using this scenario, you can check the process of the request for an adjustment posting as a test run . To do so, activate the scenario for the applications listed: CO-COST and FI-GL .
From the CO line item reports or the document displays in Controlling (CO) and Financial Accounting (FI), you can goto the request form for an adjustment posting. The data stored in scenario SR31 controls the processing of the requests and defines the fields that are available on the request form.
To define your own scenarios, copy the scenario included in the standard system SR31 and adapt the copy as needed. To do so, choose Define Scenarios for Requesting an Adjustment Posting.
You can find additional information on the process of requesting an adjustment posting in the SAP Library under Financials -> Controlling (CO) -> Cost Center Accounting -> Manual Actual Postings -> Requesting an Adjustment Posting in the Intranet.