User-defined set type ZFORM does not exist in BDOC structure

Hi Experts,

I'm using LMSW to update the Attribute ZNAME of Set Type ZFORM for a product using IDOC of Message Type CRMXIF_PRODUCT_MATERIAL_SAVE.

I have also generated the API append by including the Set Type ZFORM in the transport request.

I'm getting error message "User-defined set type ZFORM does not exist in BDOC structure" in the IDOC Posting.

Please let me know the steps i'm missing / procedure to fix this error.

Regards,

Arun