In the 837I 5010 TR3, for Loop 2320, Segment OI, page 367, the TR3 Example shows: OI***Y*B**Y~
According the Element Detail section, OI04 is NOT USED. Therefore, we believe the value of "B" for OI04 in the example is not valid in 5010. Please verify.
The example should read OI***Y***Y~