From https://www.ibm.com/support/knowledgecenter/en/SSAE4W_7.1.0/com.ibm.etools.iseries.langref.doc/c0925395347.htm https://www.ibm.com/support/knowledgecenter/

From https://www.ibm.com/support/knowledgecenter/en/SSAE4W_7.1.0/com.ibm.etools.iseries.langref.doc/c0925395347.htm https://www.ibm.com/support/knowledgecenter/en/SSAE4W_7.1.0/... : > The ALTER statement changes the transfer point specified in a GO TO statement. > ALTER procedure-name-1 TO PROCEED TO procedure-name-2 > Before the ALTER statement is executed, when control reaches the paragraph specified in procedure-name-1, the GO TO statement transfers control to the paragraph specified in the GO TO statement. After execution of the ALTER statement, however, the next time control reaches the paragraph specified in procedure-name-1, the GO TO statement transfers control to the paragraph specified in procedure-name-2. Yikes.