some of the fields on purchasing data schedule line level and header level data source showing zero values after replicating into info providers

Hello Guys ,

                 i am working on SAP BI modelling part where i  am extracting R/3 system data into BW info providers. my corresponding working area is on following data sources :

2LIS_02_HDR.

2LIS_02_SCL.    

and my data targets are : purchasing data and purchasing groups info cubes.

i have already check the info of these data sources in RSA3 of ECC side.and records are fetched. but when i did the modelling in BI ,i make the transformations ,map corresponding fields of data source and data target. when the data is loaded into info cube/ODS after DTP ,then i check the contents ,and some of the field are having zero values like: all delivery side data and some other fields.

so what could be the possible reason for that ??? kindly help me. and ask me any further query..

Regards

Ashish