Vidjeo scada and Siemens 300 pn

Is there something obvious to take into account when reading siemens pn network with a Shneider Scada ? Like adding 1 digit to adress numbers or reverse the LSB/MSB or things like that ?

We supplied a s7-300 with a data table that i'm sure it works but the customer keep telling me it's wrong (Same old **** with 2 party) And unfortunatelly it is very far away without a VPN connection availibility...

The scada guy seem to read my DB adress shifted from 1 case but keep telling it is sometimes 1 case, sometimes 2, or sometimes 1 case below etc...

I could imagine a LSB/MSB shift could mix everythings up but keep each data wrong individually so it isn't the case.
Could it be just something to go with Shneider starting at xxxx1 when Siemens start at 0 ? but for 16 bits among 32 bits adress and some works because it get the correct values on the first 16 bits and the next one need 32 ?

I have some real, some DINT and some INT data exchanged also...But the problem isn't related to just 1 type of data but to all.

if a 32 bit data has a value lower than 16bits, the result would be only in the lsb side of the 32 bits ? But if you read a 32 bit with a 16 bit ofset, could you still get the value ?