All about SAP: ALE Delta and Change Pointers

Master data Delta mechanism
Master data delta explained

Change Pointers
ROOSGEN :
MSGTYP will give you the message type for that datasource. Taking an example of 0MAT_PLANT_ATTR : in production it has MSGTYP = RS0011

BD50 Or table TBDA2
we can see if the MSGTYPs are active.

BD52
Here we can see all 'Change document items' which are maintained for this Message Type. Only the fields where 'change document' checked in the dataelement can be present here.[ It also doesn't mean all the fields in the table where the change document is checked will be present. They need to be maintained, I GUESS ].

BD61
Activate Change Pointers Generally

TBD62
'Assignment of change document field to message type' can be seen. [I GUESS it kind of gives the same information as BD52, but in a tabular form . In this table, for the same 'Object Class' and 'Table Name' we find different Message Types.
For example, I am looking for 0MAT_PLANT_ATTR-TRAME and UMLC fields, which are from MARC table. Both of them have Change Documents enabled, but I am not seeing the delta picking up change in the fields. When I look into TBD62, I find entries for TRAME with Object class 'MATERIAL' Table 'MARC' , but they have different Message Class than RS0011. There are no entries for Message Class RS0011 for TRAME.I am ASSUMING that is the reason it is not picking up delta for these fields.

Re-running a failed Master data delta

How to Request a Failed Delta

Because the process indicators have been set to X, and there is nothing in RSA7, how do you request a failed delta.

The solution is to run program RSA1BDCP in the source system.

The ABAP does not validate the selection screen, as such I strongly advise you to validate and fill in all fields.