Validating invalid credit card transaction upload

Summary

How to validate after entering merchant category code

Content

Hello:  We are testing uploading of credit cards.  I have one upload that had one invalid and one unassigned transaction (happened to be for the same employee).  I have performed the following steps:

1) Assigned the employee - that error went away

2)On the invalid; I couldn't find anywhere to see what was invalid (and it has "validation in progress" under status).  I checked the Merchant Code, and it was not in the setup & maint.  merchant code list, so I did the following:

  a) Added the merchant code in "Manage Merchant Category Code"