There may be a situation where you sent a requirement to the wrong organization, or you realized that the dates were wrong. There is the ability to 'retract' an issued requirement.
Note: If the requirement has been accepted, this ability will disappear.
Start by selecting 'Status of Assigned Requirements' from the Requirements tab.
From there, you will want to find the correct requirement; click the name to continue.
Next, you will need to choose the supplier that the requirement was issued to. On the right side, you should see an ellipses, and once hovered over, there will be an option to 'retract'.