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Use
Business processes are represented in the SAP environment as a chain of transactions. Transactions in a chain often use the results of previous transactions.
The result of a transaction is often in the form of a key (order number, customer number, material, …). Subsequent transactions need this key. The key is usually output in a system message.
When you create test cases, you must often read the result of a transaction and pass it to one or more subsequent transactions. The chain function does this.
Prerequisites
This function passes the result of a transaction or transaction screen field contents to subsequent transactions. You cannot chain within a transaction. Results cannot be passed to previous transactions.
Procedure

If the transaction result is in a system message, it is in the last screen of the transaction.

Utilities ® Display chains shows all chains and checks in the test case.
