How To Fix IP864 - Error calling up function module IWP3_READ_T399W

IP864 - Overview

• Message type: E = Error

• Message class: IP - Messages for preventive maintenance

• Message number: 864

• Message text: Error calling up function module IWP3_READ_T399W

What causes this issue?

The system could not establish whether the creation of change documents
is active or inactive.
Possible causes:
No Customizing settings for maintenance plan category &V1& could be
found.
No maintenance plan category is specified for the maintenance plan.
All the import parameters of the function module IWP3_READ_T399W are
empty.

System Response

INCLUDE NO PROCESSING OBJECT DOCU ID TX

How to fix this error?

INCLUDE SYSTEM ADMINISTRATOR OBJECT DOCU ID TX

Procedure for System Administrators

Check the Customizing settings of the maintenance plan categories.
INCLUDE INFO-SAP OBJECT DOCU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IP864 - Error calling up function module IWP3_READ_T399W ?

  The SAP error message IP864, which states "Error calling up function module IWP3_READ_T399W," typically occurs in the context of the SAP Plant Maintenance (PM) or SAP Production Planning (PP) modules. This error is related to the function module IWP3_READ_T399W, which is used to read data from the T399W table, which contains information about work center capacities.
  Causes:
  
  Data Issues: The T399W table may have inconsistent or corrupted data, which can lead to errors when the function module attempts to read from it.
  Authorization Issues: The user executing the transaction may not have the necessary authorizations to access the function module or the T399W table.
  
  Configuration Issues: There may be configuration problems in the work center or related master data that prevent the function module from executing correctly.
  System Bugs: There could be a bug in the SAP system or the specific version you are using that affects the function module.
  
  Solutions:
  
  
  Check Data Integrity: 
  
  Use transaction SE16