Relationship issue

Hi ,

consider following scenario.

I have 4 entities as follows:

• Contact
• lender
• Financial Statement
• Loan

now,this four entities have related to each other as follows

1. Contact and Financial statement -1:N Referential
2. Lender and financial Statement -1:N Referential
3. contact And Loan - 1:N Referential
4. Lender And Loan-1:N Referential
5. Loan and Financial statement-1:N Referential

on loan entity ,Go to 1:N relationship ,there select loan and financial statement  relationship,

Now on Left Pane we are having mappingOption ,there i have added new mapping between primary contact field  of loan(this field is because of contact And Loan - 1:N Referential relationship) and primary contact field of financial statement(this field is because of contact And Financial statement- 1:N Referential relationship).

also added another mapping for  loan and financial statement relationship.

i have added new mapping between lender_id field  of loan(this field is because of Lender  And Loan - 1:N Referential relationship) and lender_id field of financial statement(this field is because of Lender And Financial statement- 1:N Referential relationship).

i have publish this customization ,working fine on source environment,then i exported package from source environment with all these changes included,and import it on target environment,

this package imported successfully with warning on target environment,when i checked this above describe relationship of primary contact and lender_id in mapping part ,it was missing there,and i checked log for warning,then it was showing:

Cannot map attribute 'new_lenderid' on entity 'new_loan' to attribute 'new_lender' on entity 'new_financialstatement'. Either an attribute is not mappable, or attributes are of different types, or the size of the target attribute is smaller than the size of the source attribute

Cannot map attribute 'new_primarycontact' on entity 'new_loan' to attribute 'new_primarycontact' on entity 'new_financialstatement'. Either an attribute is not mappable, or attributes are of different types, or the size of the target attribute is smaller than the size of the source attribute

please help me to solve this issue.