Sequence of order message flow

There are four purchase-order message types used by AIP:

■ XORDERCRE

■ XORDERDTLCRE

■ XORDERMOD

■ XORDERDTLMOD.

Does the order message flow from AIP-RMS in the same above sequence i.e first CRE then DTLCRE and MOD and DTLMOD?

Consider the order example as below.

AIP

Order_number   Location    QTY

11111                  623            300

RMS

Order_number   Location    QTY

11111                  623            300

Now i change the location of this order in AIP theoretically data is as follows

AIP

Order_number   Location    QTY

11111                  623            -300

11111                  636             300  

So when an update is sent to RMS

Does it first send the DLTCRE message and then DETLMOD?