Hi all, firstly please forgive me if i'm a little slow, i haven't done any access work for a year or so and i'm a bit rusty 
Basically i have a customer database which holds customer details and orders. It's been created and working fine for a couple of years, but i recently found something that i'm having trouble with. tblCustomers holds most of the data and links to other tables such as tblCustomerPostCode/tblCustomerEmail with the primay key CustomerNumber. I put certain data such as these in other tables because i was taught to not include fields with lots of blanks and these wouldn't necessarily always have data. The relationships table is attached - relationships.jpg
I also have a main table for customer orders - tblCustomerPurchases which holds data such as date of purchase and purchase cost. This has a primary key field called PurchaseNumber, and links to tblCustomers with a CustomerNumber field. This meant i could have many purchases for one customer, etc.
Everything has worked great as i said and i have many forms, reports etc with no problems, and the problem i have hasn't shown itself until now.
If i have a query with tblCustomers and all the relevant other tables linked to it, all fields work perfectly and i can add, edit etc whatever data i need to. See qselcustdetails.jpg attached.
The moment i add the tblCustomerPurchases or anything that uses it to the query however, i can no longer add data to some of the fields such as tblCustomerPostcode, tblCustomerArea, tblCustomerEmail etc. If there is data in the field already then i can change it, but not add new data. See qselcustdet&purchase.jpg attached.
I believe it must be to do with the fact that tblCustomerPurchases uses the CustomerNumber field as well? And it then doesn't allow tables such as tblCustomerPostcode to create new data? But i can't understand why. Like i said i'm a little rusty and i can't figure it out at the mo
Also, can anyone tell me any suggestions for the easiest way of fixing it? The database already has 5000 customers and plenty of forms, reports etc.
Many thanks in advance
Basically i have a customer database which holds customer details and orders. It's been created and working fine for a couple of years, but i recently found something that i'm having trouble with. tblCustomers holds most of the data and links to other tables such as tblCustomerPostCode/tblCustomerEmail with the primay key CustomerNumber. I put certain data such as these in other tables because i was taught to not include fields with lots of blanks and these wouldn't necessarily always have data. The relationships table is attached - relationships.jpg
I also have a main table for customer orders - tblCustomerPurchases which holds data such as date of purchase and purchase cost. This has a primary key field called PurchaseNumber, and links to tblCustomers with a CustomerNumber field. This meant i could have many purchases for one customer, etc.
Everything has worked great as i said and i have many forms, reports etc with no problems, and the problem i have hasn't shown itself until now.
If i have a query with tblCustomers and all the relevant other tables linked to it, all fields work perfectly and i can add, edit etc whatever data i need to. See qselcustdetails.jpg attached.
The moment i add the tblCustomerPurchases or anything that uses it to the query however, i can no longer add data to some of the fields such as tblCustomerPostcode, tblCustomerArea, tblCustomerEmail etc. If there is data in the field already then i can change it, but not add new data. See qselcustdet&purchase.jpg attached.
I believe it must be to do with the fact that tblCustomerPurchases uses the CustomerNumber field as well? And it then doesn't allow tables such as tblCustomerPostcode to create new data? But i can't understand why. Like i said i'm a little rusty and i can't figure it out at the mo
Also, can anyone tell me any suggestions for the easiest way of fixing it? The database already has 5000 customers and plenty of forms, reports etc.
Many thanks in advance
