E-claims error code

[dsfdom]

I received an electronic claims error code  " #1045 - Old Group No - Payor requires group number entry on insurance plan". I checked the plan and the group number is entered in the correct field, nothing was changed on the plan so I don't understand the message.

[lspitz]

Glad you figured it out so quickly!  Could you share your findings? 

[dsfdom]

Finally was able to answer my own question!