dump stating "BSP exception : An attribute with the name "'BTDATESRVSTART" is not defined".
In CRM 7.0 EHP1, a new page attribute with name "'BTDATESRVSTART" is added to view and view . If the views have been enhanced prior to the CRM 7.0 EHP1 upgrade, this page attribute does not exist in the standard component of CRM old version and hence does not exist in the customer enhancement.
Add the missing page attribute BTDATESRVSTART in the view in customer enhancement.
please refer
FYR: 1615938 - BSP Exception CX_BSP_INV_ATTR_NAME because of a missing attribute
Vaibhav Shah