GMM-G3 SKU number difference

We got your module GMM-G3 assembled at one of our products where in the past we have been used SKU number 1103885 (AXN5.1.1_85125). However, our EMS has assembled the one with 1103899 (AXN5.1.1_8518).

What is the difference, can we fix the issue if it is for example related to the format or bit rate?