Hi every body

I am a newbiew of GP 10. I used Econnect 10 to send my Purchase Order to GP as Sales Order

I tried to send Purch as GO Sales Order. Sometime, it transferred data successful but sometimes this generates following  error: 

Sql procedure error codes returned: Error Number = 1599  Stored Procedure taSopLineIvcInsert  Error Description = The UOFM for the item is not specified in the Item Price List as a Default Selling UofM Node Identifier Parameters: taSopLineIvcInsert                                  SOPNUMBE = ORDST2270         SOPTYPE = 2 Related Error Code Parameters for Node : taSopLineIvcInsert                                  UOFM =  Note: This parameter was not passed in, no value for the parameter will be returned.    Error Number = 5313  Stored Procedure taSopLineIvcInsert  Error Description = Unit of Measure does not exist for the Unit of Measure Schedule being used Node Identifier Parameters: taSopLineIvcInsert                                  SOPNUMBE = ORDST2270         SOPTYPE = 2 Related Error Code Parameters for Node : taSopLineIvcInsert                                  NONINVEN =  Note: This parameter was not passed in, no value for the parameter will be returned.  UOFM =  Note: This parameter was not passed in, no value for the parameter will be returned.    Error Number = 771  Stored Procedure taSopLineIvcInsert  Error Description = Price Level is blank, it must either be passed in or a default must exist for the transaction Node Identifier Parameters: taSopLineIvcInsert                                  SOPNUMBE = ORDST2270         SOPTYPE = 2 Related Error Code Parameters for Node : taSopLineIvcInsert                                  PRCLEVEL =  Note: This parameter was not passed in, no value for the parameter will be returned.    

Athough I declaired

lineItem.UOFM = GetXmlTextFromGPItem("1-A3483A") // -->This funtion return "Each".

lineItem.NONINVEN =0

string GetXmlTextFromGPItem(string gpItemID)

{

    XmlNode itemnode= _itemDocXml.SelectSingleNode(string.Format("descendant::eConnect/Item[ITEMNMBR= '{0}']", gpItemID)); 

    XmlNode valueNode =null;  
    if (itemnode!=null)
        valueNode =itemnode.SelectSingleNode("SELNGUOM");           
    
    if (valueNode!=null)

             return  valueNode.InnerText;

    return  string.Empty;

} 

 Please help me solve this problem

Thanks and best regards