Setting max length of the field when using Context Model Node

Question

I have created a model using Import Adaptive Web Service model option (a web service was a wrapper around SAP BAPI function module).
There were no dictionary types created in the Local dictionary as a result of import.
I have mapped the context of the controller to the model node.
One of the fields in the model is name     CUSTOMER_NUMBER type string;
Corresponding element in the wsdl of the web service is
<xsd:element name="CUSTOMER_NUMBER" type="tns:char10" />
I have created a view with the input filed mapped to the CUSTOMER_NUMBER field of the model node.
When I type more than 10 chars into the field and hit the search button, I get a com.sap.dictionary.runtime.Ddcheck exception that the length of the field should be less than 10 chars.
How can I set the max length of the field in design time to prevent runtime exception?
Thanks,
Julia

Answer 1

Thank you for your reply.
Java trim function will trim the white spaces only, not the characters.
I can code check length functionality before calling execute function (the function that call the web service).
I can also create a dictionary structure based on the model structure; create a context value node based on the dictionary structure and use WDCopyService API to move the data between value node and model node.
I was looking for the best practice...
When importing model based on Adaptive RFC, the dictionary structures are imported together with the model. This does not happen for Adaptive web service - hence there is a need to add coding for simple checks.
Julia