It is a 6-digit number assigned by MasterCard to each acquirer. If a merchant has different acquirers for Authorization versus Settlement, the merchant will have a separate ICA for each one. SIGIS is only collecting the Authorization Acquirer ICA at this time.
Sometimes a shake or shudder will emanate from the engine compartment, because the engine isn't getting enough air, fuel or spark that it needs to run smoothly. Symptoms that might indicate such an engine-related case of the shakes include the following: 1  Shudder or jerking occurs during acceleration. 2  Staccato shaking, as if over a highway rumble strip, within a specific speed range. 3  Car starts and drives fine for a while, but later begins to shake.
It's possible you're shaking for other reasons. Diabetes and Parkinson's disease are both linked to shaking and tremors. Dehydration is actually a common cause of shaking-if you don't get enough water, your body may start to shake. Being cold is also a cause of shaking. But many times you'll find that what you're really suffering from is anxiety.