Goldengate Replicats abending with Warnings related to Trigger and no clear error

Situation 
GG replicats at client site abended with following errors in the report file

015-10-08 16:03:40  WARNING OGG-02904  Replication of PARTIAL XML containing NCHAR/NVARCHAR/NCLOB data may cause divergence.

2015-10-09 11:18:34  WARNING OGG-00869  OCI Error ORA-04098: trigger 'UATPROD.TRG_VALIDATE' is invalid and failed re-validation (status = 4098), SQL <INSERT INTO "UATPROD.TESTTAB" 

2015-10-09 11:18:34  WARNING OGG-01004  Aborted grouped transaction on ' UATPROD.TESTTAB ', Database error 4098 (OCI Error ORA-04098: 

2015-10-09 11:18:34  WARNING OGG-01003  Repositioning to rba 28437291 in seqno 3.2015-10-09 11:18:34 

Analysis

Although there is no clear OGG error, the warnings themselves reveal the issue. Particularly the warning -- OGG-00869  OCI Error ORA-04098: trigger

In this case the entire schema was replicated at the target db and as a result, during impdp, its triggers also got imported.

When we have trigger firing at source and modifying or checking any data, then we can be rest assured that the data processed and committed as part of this trigger action will find its way into the Goldengate Trail.

Therefore there is no need to have these triggers replicated at the Target Site

The only exception to this case is if you are planning to do switchovers between source and target and have them acting as a data source at different points in time.

Solution

The simple solution was to drop the triggers present in the schema on the Target database and just start the Replicat processes again.