Invoice details is blank in Service contract form

Hi All,

An invoice has been generated against a service contract, but this invoice is not showing in the following screen.

Tools > Invoice Details

We have identified the root cause of this issue, this is because the sales_order column in AR Interface table is interfaced as order number instead of Contract number + Modifier.

Not sure how this field is populated with the Order number.

Can any one please let me know how to resolve this issue.?

Any help would be much appreciated.

Thanks,

Manu